ci: bump actions/add-to-project from 1.0.2 to 2.0.0

Bumps [actions/add-to-project](https://github.com/actions/add-to-project) from 1.0.2 to 2.0.0.
- [Release notes](https://github.com/actions/add-to-project/releases)
- [Commits](actions/add-to-project@244f685...5afcf98)

---
updated-dependencies:
- dependency-name: actions/add-to-project
  dependency-version: 2.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/add-to-project.yml

@@ -40,7 +40,7 @@ jobs:
           private-key: ${{ secrets.ADD_TO_BOARD }}
 
       - name: Add issue or PR to project board
-        uses: actions/add-to-project@244f685bbc3b7adfa8466e08b698b5577571133e # v1.0.2
+        uses: actions/add-to-project@5afcf98fcd03f1c2f92c3c83f58ae24323cc57fd # v2.0.0
         with:
           project-url: "https://github.com/orgs/${{ github.repository_owner }}/projects/${{ env.BOARD_NUMBER }}"
           github-token: ${{ steps.app-token.outputs.token }}