ci: Use conventional commits for CA bundle updates

Signed-off-by: Christoph Wurst <christoph@winzerhof-wurst.at>

.github/workflows/update-cacert-bundle.yml

@@ -29,12 +29,12 @@ jobs:
         uses: peter-evans/create-pull-request@v3
         with:
           token: ${{ secrets.COMMAND_BOT_PAT }}
-          commit-message: Update CA certificate bundle
+          commit-message: "fix(security): Update CA certificate bundle"
           committer: GitHub <noreply@github.com>
           author: nextcloud-command <nextcloud-command@users.noreply.github.com>
           signoff: true
           branch: automated/noid/${{ matrix.branches }}-update-ca-cert-bundle
-          title: "[${{ matrix.branches }}] Update ca-cert bundle"
+          title: "[${{ matrix.branches }}] fix(security): Update CA certificate bundle"
           body: |
             Auto-generated update of CA certificate bundle from [https://curl.se/docs/caextract.html](https://curl.se/docs/caextract.html)
           labels: |