Bump subosito/flutter-action from 2.8.0 to 2.10.0 (dart-lang/markdown#528)

Bumps [subosito/flutter-action](https://github.com/subosito/flutter-action) from 2.8.0 to 2.10.0.
- [Release notes](https://github.com/subosito/flutter-action/releases)
- [Commits](https://github.com/subosito/flutter-action/compare/dbf1fa04f4d2e52c33185153d06cdb5443aa189d...48cafc24713cca54bbe03cdc3a423187d413aafa)

---
updated-dependencies:
- dependency-name: subosito/flutter-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

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 e1b07f4..c99a548 100644
--- a/pkgs/markdown/.github/workflows/flutter_markdown.yaml
+++ b/pkgs/markdown/.github/workflows/flutter_markdown.yaml
@@ -32,7 +32,7 @@
 
       # Install the Flutter SDK using the subosito/flutter-action GitHub action.
       - name: install the flutter sdk
-        uses: subosito/flutter-action@dbf1fa04f4d2e52c33185153d06cdb5443aa189d
+        uses: subosito/flutter-action@48cafc24713cca54bbe03cdc3a423187d413aafa
         with:
           channel: 'beta'