chore(deps): update slackapi/slack-github-action action to v2 (#155)

* chore(deps): update slackapi/slack-github-action action to v2

* Adress breaking changes

---------

Co-authored-by: alma-renovate-bot[bot] <163289924+alma-renovate-bot[bot]@users.noreply.github.com>
Co-authored-by: Rémi Zuffinetti <[email protected]>

Author: alma-renovate-bot[bot]

.github/workflows/release.yml

@@ -85,16 +85,13 @@ jobs:
             ${{ steps.release-notes.outputs.RELEASE_NOTES }}
 
       - name: Send changelog to Slack
-        uses: slackapi/slack-github-action@v1.27.0
+        uses: slackapi/slack-github-action@v2.0.0
         with:
-          # Channel `#alma_changelog`
-          channel-id: 'CR9C57YM6'
-          slack-message: ${{ steps.slack-markdown-release-notes.outputs.text }}
+          method: chat.postMessage
+          token: ${{ secrets.SLACK_RELEASE_CHANGELOG_BOT_TOKEN }}
           payload: |
-            {
-              "username": "${{ github.event.sender.login }}",
-              "icon_url": "${{ github.event.sender.avatar_url }}"
-            }
-        env:
-          SLACK_BOT_TOKEN: ${{ secrets.SLACK_RELEASE_CHANGELOG_BOT_TOKEN }}
+            channel: CR9C57YM6 # alma_changelog 
+            text: ${{ steps.slack-markdown-release-notes.outputs.text }}
+            username: "${{ github.event.sender.login }}"
+            icon_url: "${{ github.event.sender.avatar_url }}"