Use zzak/action-discord@v8

* Removed 'fixed/still failing' modes
* Only runs when failure() step
* Include GITHUB_TOKEN to prevent rate-limits
* Need to reset BUNDLE_ONLY on rubocop job

.github/workflows/lint.yml

@@ -48,8 +48,9 @@ jobs:
     - run: bin/check-changelogs ./rails
     - run: bin/check-config-docs ./rails
 
-    - uses: zzak/action-discord@v4
+    - uses: zzak/action-discord@v8
       continue-on-error: true
-      if: always() && github.ref_name == 'main'
+      if: failure() && github.ref_name == 'main'
       with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
         webhook: ${{ secrets.DISCORD_WEBHOOK }}

.github/workflows/rails-new-docker.yml

@@ -34,8 +34,9 @@ jobs:
     - name: Test container
       run: ruby -r ./.github/workflows/scripts/test-container.rb
 
-    - uses: zzak/action-discord@v4
+    - uses: zzak/action-discord@v8
       continue-on-error: true
-      if: always() && github.ref_name == 'main'
+      if: failure() && github.ref_name == 'main'
       with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
         webhook: ${{ secrets.DISCORD_WEBHOOK }}

.github/workflows/rubocop.yml

@@ -23,8 +23,11 @@ jobs:
     - name: Run RuboCop
       run: bundle exec rubocop --parallel
 
-    - uses: zzak/action-discord@v4
+    - uses: zzak/action-discord@v8
+      env:
+        BUNDLE_ONLY: ""
       continue-on-error: true
-      if: always() && github.ref_name == 'main'
+      if: failure() && github.ref_name == 'main'
       with:
+        github-token: ${{ secrets.GITHUB_TOKEN }}
         webhook: ${{ secrets.DISCORD_WEBHOOK }}