Bump the all group across 1 directory with 2 updates

Bumps the all group with 2 updates in the / directory: [actions/checkout](https://github.com/actions/checkout) and [slackapi/slack-github-action](https://github.com/slackapi/slack-github-action).


Updates `actions/checkout` from 6 to 7
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v6...v7)

Updates `slackapi/slack-github-action` from 3.0.1 to 3.0.3
- [Release notes](https://github.com/slackapi/slack-github-action/releases)
- [Changelog](https://github.com/slackapi/slack-github-action/blob/main/CHANGELOG.md)
- [Commits](slackapi/slack-github-action@v3.0.1...v3.0.3)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: all
- dependency-name: slackapi/slack-github-action
  dependency-version: 3.0.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: all
...

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

Author: dependabot[bot]

.github/workflows/ci.yml

@@ -28,7 +28,7 @@ jobs:
       markdown: ${{ steps.changes.outputs.markdown_all }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Filter changed paths
         uses: opsmill/paths-filter@v3.0.2
         id: changes
@@ -44,7 +44,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           submodules: true
       - name: Install uv
@@ -69,7 +69,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           submodules: true
       - name: Install uv
@@ -88,7 +88,7 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
       - name: Setup Node.js
         uses: actions/setup-node@v6
         with:
@@ -116,7 +116,7 @@ jobs:
       build-status: ${{ job.status }}
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           submodules: true
       - name: Update submodules
@@ -157,7 +157,7 @@ jobs:
         working-directory: ./docs
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
         with:
           submodules: true
       - name: Update submodules

.github/workflows/notify-ci-failure.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Send Slack notification
-        uses: slackapi/slack-github-action@v3.0.1
+        uses: slackapi/slack-github-action@v3.0.3
         with:
           webhook: ${{ secrets.SLACK_WEBHOOK_URL }}
           webhook-type: incoming-webhook