Bump subosito/flutter-action from 2.12.0 to 2.16.0

Bumps [subosito/flutter-action](https://github.com/subosito/flutter-action) from 2.12.0 to 2.16.0.
- [Release notes](https://github.com/subosito/flutter-action/releases)
- [Commits](subosito/flutter-action@2783a3f...44ac965)

---
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>

Author: dependabot[bot]

.github/workflows/dart.yml

@@ -35,7 +35,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
       - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
-      - uses: subosito/flutter-action@2783a3f08e1baf891508463f8c6653c258246225 # v2.12.0
+      - uses: subosito/flutter-action@44ac965b96f18d999802d4b807e3256d5a3f9fa1 # v2.16.0
         with:
           flutter-version: 3.19.1
           cache: true
@@ -99,7 +99,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1
-      - uses: subosito/flutter-action@2783a3f08e1baf891508463f8c6653c258246225 # v2.12.0
+      - uses: subosito/flutter-action@44ac965b96f18d999802d4b807e3256d5a3f9fa1 # v2.16.0
         with:
           flutter-version: ${{ matrix.flutter-version }}
           cache: true