Bump JuliaRegistries/TagBot from 1.19.2 to 1.20.0

Bumps [JuliaRegistries/TagBot](https://github.com/juliaregistries/tagbot) from 1.19.2 to 1.20.0.
- [Release notes](https://github.com/juliaregistries/tagbot/releases)
- [Commits](JuliaRegistries/TagBot@da659ec...29c35fc)

---
updated-dependencies:
- dependency-name: JuliaRegistries/TagBot
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/TagBot.yml

@@ -25,7 +25,7 @@ jobs:
     if: github.event_name == 'workflow_dispatch' || github.actor == 'JuliaTagBot'
     runs-on: ubuntu-latest
     steps:
-      - uses: JuliaRegistries/TagBot@da659ec760f7ae7b8b56b51543028ed31b7d1943 # v1.19.2
+      - uses: JuliaRegistries/TagBot@29c35fccdd29270e3560ede0c1b77b4b6e12abce # v1.20.0
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           ssh: ${{ secrets.DOCUMENTER_KEY }}