Use GitHub action from other repo

.github/workflows/ci.yml

@@ -36,70 +36,4 @@ jobs:
       GH_REPO: ${{ github.repository }}
       GH_TOKEN: ${{ github.token }}
     steps:
-      - name: Setup Go
-        uses: actions/setup-go@v4
-        with:
-          go-version: ^1.22
-
-      - name: Install go-coverage-report
-        run: |
-          go install github.com/fgrosse/go-coverage-report@v0.1.0
-          which go-coverage-report
-
-      - name: Determine changed files
-        id: changed-files
-        uses: tj-actions/changed-files@aa08304bd477b800d468db44fe10f6c61f7f7b11 # v42.1.0
-        with:
-          write_output_files: true
-          json: true
-          files: |
-            **.go
-          files_ignore: |
-            **_test.go
-            vendor/**
-
-      - name: Download code coverage results from current run
-        uses: actions/download-artifact@v4
-        with:
-          name: code-coverage
-          path: .github/outputs
-
-      - name: Rename code coverage results file from current run
-        run: |
-          mv .github/outputs/coverage.txt .github/outputs/new-coverage.txt
-
-      - name: Download code coverage results from target branch
-        run: |
-          LAST_SUCCESSFUL_RUN_ID=$(gh run list --status=success --branch=main --workflow=CI --event=push --json=databaseId --limit=1 -q '.[] | .databaseId')
-          if [ -z "$LAST_SUCCESSFUL_RUN_ID" ]; then
-            echo "No successful run found on the target branch"
-            exit 1
-          else
-            echo "Last successful run on the target branch: $LAST_SUCCESSFUL_RUN_ID"
-          fi
-          
-          gh run download $LAST_SUCCESSFUL_RUN_ID --name=code-coverage --dir=.github/outputs
-          mv .github/outputs/coverage.txt .github/outputs/old-coverage.txt
-
-      - name: Compare code coverage results
-        run: |
-          cat .github/outputs/all_changed_files.json
-          
-          go-coverage-report \
-            -prefix=github.com/fgrosse/prioqueue \
-            .github/outputs/old-coverage.txt \
-            .github/outputs/new-coverage.txt \
-            .github/outputs/all_changed_files.json \
-          > coverage-comment.md
-
-      - name: Comment on pull request
-        run: |
-          COMMENT_ID=$(gh api repos/${{ github.repository }}/issues/${{ github.event.pull_request.number }}/comments -q '.[] | select(.user.login=="github-actions[bot]" and (.body | test("Coverage Δ")) ) | .id' | head -n 1)
-          if [ -z "$COMMENT_ID" ]; then
-            echo "Creating new coverage report comment"
-          else
-            echo "Replacing old coverage report comment (ID: $COMMENT_ID)"
-            gh api -X DELETE repos/${{ github.repository }}/issues/comments/$COMMENT_ID
-          fi
-
-          gh pr comment ${{ github.event.number }} --body-file=coverage-comment.md
+      - uses: fgrosse/go-coverage-report