Bump the github-actions group with 2 updates (dart-lang/markdown#617)

Bumps the github-actions group with 2 updates: [actions/checkout](https://github.com/actions/checkout) and [dart-lang/setup-dart](https://github.com/dart-lang/setup-dart).


Updates `actions/checkout` from 4.1.6 to 4.1.7
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/a5ac7e51b41094c92402da3b24376905380afc29...692973e3d937129bcbf40652eb9f2f61becf3332)

Updates `dart-lang/setup-dart` from 1.6.4 to 1.6.5
- [Release notes](https://github.com/dart-lang/setup-dart/releases)
- [Changelog](https://github.com/dart-lang/setup-dart/blob/main/CHANGELOG.md)
- [Commits](https://github.com/dart-lang/setup-dart/compare/f0ead981b4d9a35b37f30d36160575d60931ec30...0a8a0fc875eb934c15d08629302413c671d3f672)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
- dependency-name: dart-lang/setup-dart
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
...

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

pkgs/markdown/.github/workflows/crash_test.yaml

diff --git a/pkgs/markdown/.github/workflows/crash_test.yaml b/pkgs/markdown/.github/workflows/crash_test.yaml
index 4a3481a..6b26188 100644
--- a/pkgs/markdown/.github/workflows/crash_test.yaml
+++ b/pkgs/markdown/.github/workflows/crash_test.yaml
@@ -12,8 +12,8 @@
   crash-test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
-      - uses: dart-lang/setup-dart@f0ead981b4d9a35b37f30d36160575d60931ec30
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
+      - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
       - name: Install dependencies
         run: dart pub get
       - name: Run crash_test.dart

pkgs/markdown/.github/workflows/flutter_markdown.yaml

diff --git a/pkgs/markdown/.github/workflows/flutter_markdown.yaml b/pkgs/markdown/.github/workflows/flutter_markdown.yaml
index 30216e8..59ecd39 100644
--- a/pkgs/markdown/.github/workflows/flutter_markdown.yaml
+++ b/pkgs/markdown/.github/workflows/flutter_markdown.yaml
@@ -19,13 +19,13 @@
 
     steps:
       - name: clone dart-lang/markdown
-        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
         with:
           repository: dart-lang/markdown
           path: markdown
 
       - name: clone flutter/packages
-        uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
         with:
           repository: flutter/packages
           path: flutter_packages

pkgs/markdown/.github/workflows/test-package.yml

diff --git a/pkgs/markdown/.github/workflows/test-package.yml b/pkgs/markdown/.github/workflows/test-package.yml
index 37bf911..f0b9575 100644
--- a/pkgs/markdown/.github/workflows/test-package.yml
+++ b/pkgs/markdown/.github/workflows/test-package.yml
@@ -22,8 +22,8 @@
       matrix:
         sdk: [dev]
     steps:
-      - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
-      - uses: dart-lang/setup-dart@f0ead981b4d9a35b37f30d36160575d60931ec30
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
+      - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
         with:
           sdk: ${{ matrix.sdk }}
       - id: install
@@ -49,8 +49,8 @@
         os: [ubuntu-latest]
         sdk: [3.2, dev]
     steps:
-      - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
-      - uses: dart-lang/setup-dart@f0ead981b4d9a35b37f30d36160575d60931ec30
+      - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
+      - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
         with:
           sdk: ${{ matrix.sdk }}
       - id: install
@@ -64,8 +64,8 @@
     needs: test
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@a5ac7e51b41094c92402da3b24376905380afc29
-    - uses: dart-lang/setup-dart@f0ead981b4d9a35b37f30d36160575d60931ec30
+    - uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
+    - uses: dart-lang/setup-dart@0a8a0fc875eb934c15d08629302413c671d3f672
       with:
         sdk: dev
     - name: Install dependencies