build(deps): 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>

.github/workflows/main.yml

@@ -35,7 +35,7 @@ jobs:
               uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
 
             - name: Install Flutter
-              uses: subosito/flutter-action@2783a3f08e1baf891508463f8c6653c258246225
+              uses: subosito/flutter-action@44ac965b96f18d999802d4b807e3256d5a3f9fa1
               with:
                   flutter-version: ${{ env.flutter }}
                   channel: stable
@@ -59,7 +59,7 @@ jobs:
               uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
 
             - name: Install Flutter
-              uses: subosito/flutter-action@2783a3f08e1baf891508463f8c6653c258246225
+              uses: subosito/flutter-action@44ac965b96f18d999802d4b807e3256d5a3f9fa1
               with:
                   flutter-version: ${{ env.flutter }}
                   channel: stable
@@ -79,7 +79,7 @@ jobs:
               uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
 
             - name: Install Flutter
-              uses: subosito/flutter-action@2783a3f08e1baf891508463f8c6653c258246225
+              uses: subosito/flutter-action@44ac965b96f18d999802d4b807e3256d5a3f9fa1
               with:
                   flutter-version: ${{ env.flutter }}
                   channel: stable
@@ -111,7 +111,7 @@ jobs:
               uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11
 
             - name: Install Flutter
-              uses: subosito/flutter-action@2783a3f08e1baf891508463f8c6653c258246225
+              uses: subosito/flutter-action@44ac965b96f18d999802d4b807e3256d5a3f9fa1
               with:
                   flutter-version: ${{ env.flutter }}
                   channel: stable