Bump act10ns/slack from 1 to 2

Bumps [act10ns/slack](https://github.com/act10ns/slack) from 1 to 2.
- [Release notes](https://github.com/act10ns/slack/releases)
- [Changelog](https://github.com/act10ns/slack/blob/master/RELEASE.md)
- [Commits](https://github.com/act10ns/slack/compare/v1...v2)

---
updated-dependencies:
- dependency-name: act10ns/slack
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/github.yml

@@ -338,7 +338,7 @@ jobs:
         DEPLOY_RSA: ${{ secrets.DEPLOY_RSA }}
         PACKAGE_EXTENSION: ${{ matrix.extension }}
 
-    - uses: act10ns/slack@v1
+    - uses: act10ns/slack@v2
       with:
         status: ${{ job.status }}
         channel: '#notifications'
@@ -441,7 +441,7 @@ jobs:
         path: |
           ${{ env.ANDROID_APK_PATH }}
 
-    - uses: act10ns/slack@v1
+    - uses: act10ns/slack@v2
       with:
         status: ${{ job.status }}
         channel: '#notifications'