.github: Bump slackapi/slack-github-action from 1.27.0 to 2.0.0 (#14141)

Bumps [slackapi/slack-github-action](https://github.com/slackapi/slack-github-action) from 1.27.0 to 2.0.0.
- [Release notes](https://github.com/slackapi/slack-github-action/releases)
- [Commits](37ebaef184...485a9d42d3)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/govulncheck.yml

@@ -24,13 +24,13 @@ jobs:
 
       - name: Post to slack
         if: failure() && github.event_name == 'schedule'
-        uses: slackapi/slack-github-action@37ebaef184d7626c5f204ab8d3baff4262dd30f0 # v1.27.0
-        env:
-          SLACK_BOT_TOKEN: ${{ secrets.GOVULNCHECK_BOT_TOKEN }}
+        uses: slackapi/slack-github-action@485a9d42d3a73031f12ec201c457e2162c45d02d # v2.0.0
         with:
-          channel-id: 'C05PXRM304B'
+          method: chat.postMessage
+          token: ${{ secrets.GOVULNCHECK_BOT_TOKEN }}
           payload: |
             {
+              "channel": "C05PXRM304B",
               "blocks": [
                 {
                   "type": "section",

.github/workflows/test.yml

@@ -569,8 +569,10 @@ jobs:
       # By having the job always run, but skipping its only step as needed, we
       # let the CI output collapse nicely in PRs.
       if: failure() && github.event_name == 'push'
-      uses: slackapi/slack-github-action@37ebaef184d7626c5f204ab8d3baff4262dd30f0 # v1.27.0
+      uses: slackapi/slack-github-action@485a9d42d3a73031f12ec201c457e2162c45d02d # v2.0.0
       with:
+        webhook: ${{ secrets.SLACK_WEBHOOK_URL }}
+        webhook-type: incoming-webhook
         payload: |
           {
             "attachments": [{
@@ -582,9 +584,6 @@ jobs:
               "color": "danger"
             }]
           }
-      env:
-        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
-        SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
 
   check_mergeability:
     if: always()