Update PR title

Author: hishamco

.github/workflows/update-submodule.yml

@@ -23,12 +23,21 @@ jobs:
           git submodule update --init --recursive
           git submodule update --recursive --remote
 
+      - name: Get updated submodule commit hash
+        id: submodule-hash
+        shell: pwsh
+        run: |
+          $line = (git submodule status --recursive | Select-Object -First 1).Trim()
+          $hash = ($line -split '\s+')[0].TrimStart('-','+')
+          $shortHash = $hash.Substring(0,7)
+          "short=$shortHash" >> $env:GITHUB_OUTPUT
+
       - name: Create Pull Request
         uses: peter-evans/create-pull-request@v7
         with:
           token: ${{ secrets.OCC_TOKEN }}
           commit-message: Update submodules to latest versions
-          title: Update submodules to latest versions 🔄
+          title: Update OCC.Library submodule to commit ${{ steps.submodule-hash.outputs.short }}
           body: |
             Automated submodule update generated by workflow.
           branch: update-submodules