fix: new action version number

Author: cmeesters

.github/workflows/announce-release.yml

@@ -16,12 +16,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Post to Mastodon
-        uses: snakemake/mastodon-release-post-action@v1.1.1
-
+        uses: snakemake/mastodon-release-post-action@v1.2.0
         with:
           access-token: ${{ secrets.MASTODONBOT }}
           pr-title: ${{ github.event.head_commit.message }}
-          base-url: "" # may be empty for our instance
           message: |
             Beep, Beep - I am your friendly #Snakemake release announcement bot.