tools: fix parsing of commit trailers in lint-release-proposal GHA

PR-URL: #62077
Reviewed-By: Richard Lau <richard.lau@ibm.com>
Reviewed-By: Stewart X Addison <sxa@redhat.com>

Author: aduh95

.github/workflows/lint-release-proposal.yml

@@ -88,7 +88,7 @@ jobs:
           gh api \
             -H "Accept: application/vnd.github+json" \
             -H "X-GitHub-Api-Version: 2022-11-28" \
-            --jq '.commits.[] | { smallSha: .sha[0:10] } + (.commit.message|capture("^(?<title>.+)\n\n(.*\n)*PR-URL: (?<prURL>.+)\n"))' \
+            --jq '.commits.[] | { smallSha: .sha[0:10] } + (.commit.message|capture("^(?<title>.+)\n\n(.*\n)*PR-URL: (?<prURL>.+)(\n|$)"))' \
             "/repos/${GITHUB_REPOSITORY}/compare/v${MAJOR}.x...$GITHUB_SHA" --paginate \
           | node tools/actions/lint-release-proposal-commit-list.mjs "$CHANGELOG_PATH" "$GITHUB_SHA" \
           | while IFS= read -r PR_URL; do