[release-12.3.1] CI: Fix release-build bug; github.repository includes org (#113912)

CI: Fix release-build bug; github.repository includes org (#113909)

* CI: Fix release-build bug; github.repository includes org

* set pipefail

* fix notify in release-build; this step should fail if it actually fails

(cherry picked from commit 9376d569cc)

Co-authored-by: Kevin Minehart <5140827+kminehart@users.noreply.github.com>

.github/workflows/release-build.yml

@@ -326,7 +326,10 @@ jobs:
           GITHUB_TOKEN: ${{ steps.generate_token.outputs.token }}
           GRAFANA_COMMIT: ${{ needs.setup.outputs.grafana-commit }}
           REPO: ${{ github.repository }}
-        run: echo "ISSUE_NUMBER=$(gh api "/repos/grafana/${REPO}/commits/${GRAFANA_COMMIT}/pulls" | jq -r '.[0].number')" >> "$GITHUB_ENV"
+        run:
+          set -eo pipefail
+          gh api "/repos/${REPO}/commits/${GRAFANA_COMMIT}/pulls" | jq -r '.[0].number' | tee issue_number.txt
+          echo "ISSUE_NUMBER=$(cat issue_number.txt)" >> "$GITHUB_ENV"
       - name: Find Comment
         uses: peter-evans/find-comment@3eae4d37986fb5a8592848f6a574fdf654e61f9e # v3
         if: ${{ steps.find-pr.outcome == 'success' }}