fix: using latest fix for the announcement action (#263)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **Chores**
- Updated the workflow for announcing releases on Mastodon to use a
newer version of the release post action.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

Author: cmeesters

.github/workflows/announce-release.yml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Post to Mastodon
-        uses: snakemake/mastodon-release-post-action@v1
+        uses: snakemake/mastodon-release-post-action@v1.0.2
         with:
           message: |
             Beep, Beep - I am your friendly #Snakemake release announcement bot.