ci: bump peter-evans/slash-command-dispatch from 4 to 5

Bumps [peter-evans/slash-command-dispatch](https://github.com/peter-evans/slash-command-dispatch) from 4 to 5.
- [Release notes](https://github.com/peter-evans/slash-command-dispatch/releases)
- [Commits](peter-evans/slash-command-dispatch@v4...v5)

---
updated-dependencies:
- dependency-name: peter-evans/slash-command-dispatch
  dependency-version: '5'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/slash-command-dispatch.yml

@@ -51,7 +51,7 @@ jobs:
       - name: "Slash Command Dispatch"
         id: scd_issues
         if: steps.determine_command.outputs.command-state == 'known'
-        uses: peter-evans/slash-command-dispatch@v4
+        uses: peter-evans/slash-command-dispatch@v5
         with:
           token: ${{ secrets.GIT_PAT }}
           reaction-token: ${{ secrets.GIT_PAT }}