chore(deps): update module mvdan.cc/gofumpt to v0.9.0 (#7292)

This PR contains the following updates:

| Package | Change | Age | Confidence |
|---|---|---|---|
| [mvdan.cc/gofumpt](https://redirect.github.com/mvdan/gofumpt) |
`v0.8.0` -> `v0.9.0` |
[![age](https://developer.mend.io/api/mc/badges/age/go/mvdan.cc%2fgofumpt/v0.9.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/go/mvdan.cc%2fgofumpt/v0.8.0/v0.9.0?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

> [!WARNING]
> Some dependencies could not be looked up. Check the Dependency
Dashboard for more information.

---

### Release Notes

<details>
<summary>mvdan/gofumpt (mvdan.cc/gofumpt)</summary>

###
[`v0.9.0`](https://redirect.github.com/mvdan/gofumpt/blob/HEAD/CHANGELOG.md#v090---2025-09-02)

[Compare
Source](https://redirect.github.com/mvdan/gofumpt/compare/v0.8.0...v0.9.0)

This release is based on Go 1.25's gofmt, and requires Go 1.24 or later.

A new rule is introduced to "clothe" naked returns for the sake of
clarity.
While there is nothing wrong with naming results in function signatures,
using lone `return` statements can be confusing to the reader.

Go 1.25's `ignore` directives in `go.mod` files are now obeyed;
any directories within the module matching any of the patterns
are now omitted when walking directories, such as with `gofumpt -w .`.

Module information is now loaded via Go's [`x/mod/modfile`
package](https://pkg.go.dev/golang.org/x/mod/modfile)
rather than executing `go mod edit -json`, which is way faster.
This should result in moderate speed-ups when formatting many
directories.

</details>

---

### Configuration

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Automerge - At any time (no schedule defined).

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are satisfied.

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rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
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---

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---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/open-telemetry/opentelemetry-go).

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---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: dmathieu <damien.mathieu@elastic.co>

semconv/internal/http.go

@@ -121,7 +121,7 @@ func hostIPNamePort(hostWithPort string) (ip, name string, port int) {
 	if parsedPort, err = strconv.ParseUint(portPart, 10, 16); err == nil {
 		port = int(parsedPort) // nolint: gosec  // Bit size of 16 checked above.
 	}
-	return
+	return ip, name, port
 }
 
 // EndUserAttributesFromHTTPRequest generates attributes of the

semconv/internal/v2/http.go

@@ -285,7 +285,7 @@ func firstHostPort(source ...string) (host string, port int) {
 			break
 		}
 	}
-	return
+	return host, port
 }
 
 // RequestHeader returns the contents of h as OpenTelemetry attributes.

semconv/internal/v2/net.go

@@ -287,27 +287,27 @@ func splitHostPort(hostport string) (host string, port int) {
 		addrEnd := strings.LastIndex(hostport, "]")
 		if addrEnd < 0 {
 			// Invalid hostport.
-			return
+			return host, port
 		}
 		if i := strings.LastIndex(hostport[addrEnd:], ":"); i < 0 {
 			host = hostport[1:addrEnd]
-			return
+			return host, port
 		}
 	} else {
 		if i := strings.LastIndex(hostport, ":"); i < 0 {
 			host = hostport
-			return
+			return host, port
 		}
 	}
 
 	host, pStr, err := net.SplitHostPort(hostport)
 	if err != nil {
-		return
+		return host, port
 	}
 
 	p, err := strconv.ParseUint(pStr, 10, 16)
 	if err != nil {
-		return
+		return host, port
 	}
 	return host, int(p) // nolint: gosec  // Bit size of 16 checked above.
 }

semconv/internal/v3/http.go

@@ -285,7 +285,7 @@ func firstHostPort(source ...string) (host string, port int) {
 			break
 		}
 	}
-	return
+	return host, port
 }
 
 // RequestHeader returns the contents of h as OpenTelemetry attributes.

semconv/internal/v3/net.go

@@ -287,27 +287,27 @@ func splitHostPort(hostport string) (host string, port int) {
 		addrEnd := strings.LastIndex(hostport, "]")
 		if addrEnd < 0 {
 			// Invalid hostport.
-			return
+			return host, port
 		}
 		if i := strings.LastIndex(hostport[addrEnd:], ":"); i < 0 {
 			host = hostport[1:addrEnd]
-			return
+			return host, port
 		}
 	} else {
 		if i := strings.LastIndex(hostport, ":"); i < 0 {
 			host = hostport
-			return
+			return host, port
 		}
 	}
 
 	host, pStr, err := net.SplitHostPort(hostport)
 	if err != nil {
-		return
+		return host, port
 	}
 
 	p, err := strconv.ParseUint(pStr, 10, 16)
 	if err != nil {
-		return
+		return host, port
 	}
 	return host, int(p) // nolint: gosec  // Bit size of 16 checked above.
 }

semconv/internal/v4/http.go

@@ -286,7 +286,7 @@ func firstHostPort(source ...string) (host string, port int) {
 			break
 		}
 	}
-	return
+	return host, port
 }
 
 // RequestHeader returns the contents of h as OpenTelemetry attributes.

semconv/internal/v4/net.go

@@ -287,27 +287,27 @@ func splitHostPort(hostport string) (host string, port int) {
 		addrEnd := strings.LastIndex(hostport, "]")
 		if addrEnd < 0 {
 			// Invalid hostport.
-			return
+			return host, port
 		}
 		if i := strings.LastIndex(hostport[addrEnd:], ":"); i < 0 {
 			host = hostport[1:addrEnd]
-			return
+			return host, port
 		}
 	} else {
 		if i := strings.LastIndex(hostport, ":"); i < 0 {
 			host = hostport
-			return
+			return host, port
 		}
 	}
 
 	host, pStr, err := net.SplitHostPort(hostport)
 	if err != nil {
-		return
+		return host, port
 	}
 
 	p, err := strconv.ParseUint(pStr, 10, 16)
 	if err != nil {
-		return
+		return host, port
 	}
 	return host, int(p) // nolint: gosec  // Bit size of 16 checked above.
 }