fix(ci): pin release-doc-sync meta-repo-ref to v1.9.1 and add manual dispatch

The release-doc-sync@v1 composite action defaults its meta-repo-ref
input to v1.0, but TMHSDigital/Developer-Tools-Directory has no v1.0
git ref. The action's internal actions/checkout step fails with exit
code 1 trying to fetch refs/tags/v1.0*. Override the input to v1.9.1
so first-time releases on this repo can complete.

Filed as DTD#42 against the meta-repo for the underlying tag fix.

Also adds workflow_dispatch trigger so the workflow can be re-run
manually after a path-ignored fix lands.

[skip ci]

Made-with: Cursor

Author: TMHSDigital

.github/workflows/release.yml

@@ -12,6 +12,7 @@ on:
       - "CLAUDE.md"
       - "CHANGELOG.md"
       - "ROADMAP.md"
+  workflow_dispatch: {}
 
 permissions:
   contents: write
@@ -112,6 +113,7 @@ jobs:
         with:
           plugin-version: ${{ steps.new.outputs.version }}
           previous-version: ${{ steps.current.outputs.version }}
+          meta-repo-ref: v1.9.1
 
       - name: Commit version bump
         if: steps.check.outputs.skip == 'false'