docs: draft 1.21 announcement (#4310)

Signed-off-by: Carlos Alexandro Becker <caarlos0@users.noreply.github.com>

www/docs/blog/posts/2023-09-22-goreleaser-v1.21.md

@@ -0,0 +1,89 @@
+---
+date: 2023-09-22
+slug: goreleaser-v1.21
+categories:
+  - announcements
+authors:
+  - caarlos0
+---
+
+# Announcing GoReleaser v1.21 - mostly bug fixes
+
+A boring release, mostly bug fixes.
+Boring is good.
+
+<!-- more -->
+
+## Highlights
+
+- You can now sort tags by `semver` in [GoReleaser Pro][pro]
+- Docker pushes will now be retried when the registry yields a 503. It'll retry
+  10 times.
+- Winget: added support for `package_dependencies` and update schema version to
+  1.5.0.
+- GoReleaser will now run against Gerrit, Soft-Serve, and other Git providers,
+  as long as the SCM release is disabled.
+- You can now ignore Git tags that match a regular expression.
+- You can now skip pre build hooks on `goreleaser build`.
+- Properly `go mod` handling on pre-mods Go versions.
+- WASI support.
+- New templateable fields and functions.
+- Several bug fixes, specially when the runtime OS is Windows.
+
+Besides that, some important refactories that should help evolving GoReleaser
+further:
+
+- `--skip` merges all the `--skip-*` flags, and will be extended to more
+  features (open an issue requesting what you need 📩).
+- Template error handling was improved.
+- We also updated GoReleaser to Go 1.21.
+
+And, as always, several bug fixes and documentation updates!
+
+## Windows
+
+GoReleaser was never properly tested on Windows. It somewhat works, but there
+are potentially many rough edges.
+
+[I started trying to make CI pass on Windows](https://github.com/goreleaser/goreleaser/pull/4293).
+It's a bit hard to evolve it as I don't really use Windows, so I have to juggle
+around VMs and/or CI.
+
+If you use Windows regularly and want to contribute, ping me on our
+[Discord][discord], I'm happy to help you in any way I need, especially if you
+are a beginner in the field and/or Go.
+
+## Blog
+
+Our blog was migrated to this site, or, rather, is being migrated!
+
+You can read the announcement [here](./2023-09-14-welcome.md).
+
+You can also see the still-open issue [here](https://github.com/goreleaser/goreleaser/issues/3503)
+
+## Other news
+
+- GoReleaser now has ~12.1k stars and 352 contributors! Thanks, everyone!
+- We eventually discuss new features in our Discord server. 
+  [Join the conversation][discord]!
+- nFPM had new releases as well, 
+  [check it out](https://github.com/goreleaser/nfpm/releases).
+
+## Download
+
+You can [install][] or upgrade using your favorite package manager, or see the
+full release notes and download the pre-compiled binaries [here][oss-rel] and
+[here (for Pro)][pro-rel].
+
+## Helping out
+
+You can help by contributing features and bug fixes, or by donating.
+You may also be interested in buying a GoReleaser Pro license.
+
+You can find out more [here](https://goreleaser.com/sponsors/).
+
+[install]: https://goreleaser.com/install
+[pro-rel]: https://github.com/goreleaser/goreleaser-pro/releases/tag/v1.21.0-pro
+[oss-rel]: https://github.com/goreleaser/goreleaser/releases/tag/v1.21.0
+[pro]: https://goreleaser.com/pro
+[discord]: https://goreleaser.com/discord