Fix [flutter-version] param on all workflows

Author: alexcmgit

.github/workflows/build-docs.yaml

@@ -17,7 +17,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: subosito/flutter-action@v2
         with:
-          flutter-version: "3.7.3"
+          flutter-version: "3.7.7"
           channel: "stable"
       - run: |
           flutter --version

.github/workflows/publish.yaml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: subosito/flutter-action@v2
         with:
-          flutter-version: "2.10.0"
+          flutter-version: "3.7.7"
           channel: "stable"
       - run: |
           flutter --version

.github/workflows/static-analysis.yaml

@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: subosito/flutter-action@v2
         with:
-          flutter-version: "3.3.7"
+          flutter-version: "3.7.7"
           channel: "stable"
       - run: |
           flutter --version