Fix toot workflow and formatting (#1511)

### What kind of change does this PR introduce?

* Toots toot better now.

### Does this PR introduce a breaking change?

No. Only my confidence as a programmer has been broken by this PR.

### Other information:

Praise Mastodon.

.github/workflows/publish-mastodon.template.md → .github/publish-mastodon.template.md

@@ -3,4 +3,3 @@ New #xclim release: {{ .version }} 🎉
 Latest source code available at: https://github.com/Ouranosinc/xclim/releases/tag/{{ .version }}
 Check out the docs for more information: https://xclim.readthedocs.io/en/stable/
 
-{{ .contributors }}

.github/workflows/publish-mastodon.yml

@@ -46,30 +46,30 @@ jobs:
         RELEASE_DESCRIPTION=$(echo "$RELEASE_INFO" | jq -r .body)
 
         # Remove Markdown links and the space preceding them
-        CLEANED_DESCRIPTION=$(echo "$RELEASE_DESCRIPTION" | sed -E 's/\[([^\]]+)\]\([^)]+\)//g')
+        CLEANED_DESCRIPTION=$(echo "$RELEASE_DESCRIPTION" | sed -E 's/\ \(\[[^]]+\]\([^)]+\)\)//g')
 
         # Extract the first line of the release description
         CONTRIBUTORS=$(echo "$CLEANED_DESCRIPTION" | head -n 1)
 
-        echo "CONTRIBUTORS=${CONTRIBUTORS}" >> $GITHUB_ENV
+        echo "contributors=${CONTRIBUTORS}" >> $GITHUB_ENV
 
     - name: Prepare Message
       id: render_template
-      uses: chuhlomin/render-template@v1.7
+      uses: chuhlomin/render-template@v1.8
       with:
-        template: publish-mastodon.template.md
+        template: .github/publish-mastodon.template.md
         vars: |
-            version: ${{ env.version }}
-            contributors: ${{ env.CONTRIBUTORS }}
+          version: ${{ env.version }}
 
     - name: Message Preview
-      run: echo "${{ steps.render_template.outputs.result }}"
+      run: |
+        echo "${{ steps.render_template.outputs.result }}${{ env.contributors }}"
 
     - name: Send toot to Mastodon
-      if: ${{ !github.event.inputs.dry-run }}
+      if: ${{ github.event.inputs.dry-run != 'true' }} || ${{ github.event_name == 'release' }}
       uses: cbrgm/[email protected]
       with:
-        message: ${{ steps.render_template.outputs.result }}
+        message: "${{ steps.render_template.outputs.result }}${{ env.contributors }}"
         visibility: "public"
       env:
         MASTODON_URL: ${{ secrets.MASTODON_URL }}

.pre-commit-config.yaml

@@ -14,7 +14,7 @@ repos:
   - id: trailing-whitespace
     exclude: setup.cfg
   - id: end-of-file-fixer
-    exclude: '.ipynb'
+    exclude: '.ipynb|.github/publish-mastodon.template.md'
   - id: check-json
   - id: check-toml
   - id: check-yaml