chore(deps): bump scribemd/slack-templates action to v0.6.28

| datasource  | package                  | from   | to     |
| ----------- | ------------------------ | ------ | ------ |
| github-tags | ScribeMD/slack-templates | 0.6.27 | 0.6.28 |

Author: renovate-bot

.github/workflows/notify-assignee.yaml

@@ -8,7 +8,7 @@ permissions:
 jobs:
   notify-assignee:
     name: Notify Assignee
-    uses: ScribeMD/slack-templates/.github/workflows/notify-assignee.yaml@0.6.27
+    uses: ScribeMD/slack-templates/.github/workflows/notify-assignee.yaml@0.6.28
     secrets:
       SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
       SLACK_ASSIGN_CHANNEL_ID: ${{ secrets.SLACK_ASSIGN_CHANNEL_ID }}

.github/workflows/notify-reviewers.yaml

@@ -8,7 +8,7 @@ permissions:
 jobs:
   notify-reviewers:
     name: Notify Reviewers
-    uses: ScribeMD/slack-templates/.github/workflows/notify-reviewers.yaml@0.6.27
+    uses: ScribeMD/slack-templates/.github/workflows/notify-reviewers.yaml@0.6.28
     secrets:
       SLACK_BOT_TOKEN: ${{ secrets.SLACK_BOT_TOKEN }}
       SLACK_REVIEW_CHANNEL_ID: ${{ secrets.SLACK_REVIEW_CHANNEL_ID }}