Update .editorconfig and reformat code

The settings for yaml files regularly get confused and I don't like it,
so I add them to .editorconfig to make the settings always the same.

.github/dependabot.yml

@@ -2,12 +2,12 @@
 
 version: 2
 updates:
-- package-ecosystem: "gomod"
-  directory: "/"
-  schedule:
-    interval: "weekly"
+  - package-ecosystem: "gomod"
+    directory: "/"
+    schedule:
+      interval: "weekly"
 
-- package-ecosystem: "github-actions"
-  directory: "/"
-  schedule:
-    interval: "weekly"
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "weekly"

.github/workflows/gitlab.yml

@@ -3,7 +3,7 @@ name: GitLab
 on:
   push:
   pull_request:
-    branches: [ "main" ]
+    branches: ["main"]
   workflow_dispatch:
 
 jobs:

.github/workflows/go.yml

@@ -3,7 +3,7 @@ name: Go
 on:
   push:
   pull_request:
-    branches: [ "main" ]
+    branches: ["main"]
   workflow_dispatch:
 
 jobs: