Build issues lists (Disposition of Comments) in CI

Run bikeshed issues-list on all .bsi and issues-*.txt source files to
regenerate the Disposition of Comments HTML pages. Files that are not
valid issues-list input are silently skipped.

Relates to #12054

Author: sideshowbarker

.github/workflows/build-specs.yml

@@ -57,6 +57,12 @@ jobs:
             SHORT_DATE="$(date --date=@"$TIMESTAMP" --utc +%F)"
             bikeshed -f spec "$file" "${file%Overview.bs}index.html" --md-date="$SHORT_DATE" --md-Text-Macro="BUILTBYGITHUBCI foo"
           done
+      - name: Build issues lists
+        run: |
+          for file in ./**/*.bsi ./**/issues-*.txt; do
+            echo "  $file"
+            bikeshed issues-list "$file" || true
+          done
       - name: Build index & symlinks
         run: python ./bin/build-index.py
       - run: rm -rf ./.git{,attributes,ignore}