Bump dawidd6/action-send-mail from 7 to 11

Bumps [dawidd6/action-send-mail](https://github.com/dawidd6/action-send-mail) from 7 to 11.
- [Release notes](https://github.com/dawidd6/action-send-mail/releases)
- [Commits](dawidd6/action-send-mail@v7...v11)

---
updated-dependencies:
- dependency-name: dawidd6/action-send-mail
  dependency-version: '11'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/email-notification.yml

@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Send mail
-        uses: dawidd6/action-send-mail@v7
+        uses: dawidd6/action-send-mail@v11
         with:
           subject: ${{ inputs.subject }}
           body: ${{ inputs.body }}