ci: remove invalid strategy and guard winget/homebrew to main repo (#6427)

.github/workflows/homebrew.yml

@@ -19,6 +19,7 @@ jobs:
   update_stable_homebrew_cask:
     name: "Update the stable homebrew cask"
     runs-on: "macos-latest"
+    if: github.repository_owner == 'Chatterino'
     steps:
       # Pulls out the version from the ref (e.g. refs/tags/v2.3.1 -> 2.3.1)
       - name: Execute brew bump-cask-pr with version

.github/workflows/test-arch-linux.yml

@@ -24,8 +24,6 @@ jobs:
     name: "Test Arch Linux"
     runs-on: ubuntu-latest
     container: archlinux:base-devel
-    strategy:
-      fail-fast: false
 
     steps:
       - name: Install dependencies

.github/workflows/winget.yml

@@ -5,7 +5,7 @@ on:
 jobs:
   publish:
     runs-on: windows-latest
-    if: ${{ startsWith(github.event.release.tag_name, 'v') }}
+    if: ${{ startsWith(github.event.release.tag_name, 'v') }} && github.repository_owner == 'Chatterino'
     steps:
       - uses: vedantmgoyal9/winget-releaser@main
         with: