refactor: Adjust CI jobs for v4 branch

Author: d3xter666

.github/dependabot.yml

@@ -2,7 +2,7 @@ name: Dependabot auto-merge
 on:
   pull_request:
     branches:
-      - main
+      - v4
 
 permissions:
   contents: write

.github/workflows/dependabot-auto-merge.yml

@@ -2,7 +2,7 @@ name: Build and Deploy Docs
 on:
   push:
     branches:
-      - main
+      - v4
 
 permissions:
   contents: write

.github/workflows/deploy-docs.yml

@@ -3,10 +3,10 @@ name: GitHub CI
 on:
   push:
     branches:
-      - main
+      - v4
   pull_request:
     branches:
-      - main
+      - v4
 
 # No permissions are required for this workflow
 permissions: {}

.github/workflows/github-ci.yml

@@ -3,10 +3,10 @@ name: REUSE
 on:
   push:
     branches:
-      - main
+      - v4
   pull_request:
     branches:
-      - main
+      - v4
 
 # No permissions are required for this workflow
 permissions: {}