refactor: use .env vars for version

.github/workflows/release.yml

@@ -15,17 +15,17 @@ jobs:
       - uses: actions/[email protected]
       - uses: actions/setup-java@v4
         with:
-          java-version: 17
+          java-version: ${{ env.JAVA_VERSION }}
 
       - name: Cache Flutter dependencies
         uses: actions/[email protected]
         with:
           path: /opt/hostedtoolcache/flutter
-          key: ${{ runner.OS }}-flutter-install-cache-3.19.6
+          key: ${{ runner.OS }}-flutter-install-cache-${{ env.FLUTTER_VERSION }}
 
       - uses: subosito/flutter-action@v2
         with:
-          flutter-version: 3.19.6
+          flutter-version: ${{ env.FLUTTER_VERSION }}
 
       - run: flutter doctor -v
 
@@ -65,17 +65,17 @@ jobs:
       - uses: actions/[email protected]
       - uses: actions/setup-java@v4
         with:
-          java-version: 17
+          java-version: ${{ env.JAVA_VERSION }}
 
       - name: Cache Flutter dependencies
         uses: actions/[email protected]
         with:
           path: /opt/hostedtoolcache/flutter
-          key: ${{ runner.OS }}-flutter-install-cache-3.19.6
+          key: ${{ runner.OS }}-flutter-install-cache-${{ env.FLUTTER_VERSION }}
 
       - uses: subosito/flutter-action@v2
         with:
-          flutter-version: 3.19.6
+          flutter-version: ${{ env.FLUTTER_VERSION }}
 
       - run: flutter doctor -v
 
@@ -115,17 +115,17 @@ jobs:
       - uses: actions/[email protected]
       - uses: actions/setup-java@v4
         with:
-          java-version: 17
+          java-version: ${{ env.JAVA_VERSION }}
 
       - name: Cache Flutter dependencies
         uses: actions/[email protected]
         with:
           path: /opt/hostedtoolcache/flutter
-          key: ${{ runner.OS }}-flutter-install-cache-3.19.6
+          key: ${{ runner.OS }}-flutter-install-cache-${{ env.FLUTTER_VERSION }}
 
       - uses: subosito/flutter-action@v2
         with:
-          flutter-version: 3.19.6
+          flutter-version: ${{ env.FLUTTER_VERSION }}
 
       - run: flutter doctor -v
 
@@ -168,7 +168,7 @@ jobs:
       - uses: subosito/flutter-action@v2
         with:
           channel: 'stable'
-          flutter-version: 3.19.6
+          flutter-version: ${{ env.FLUTTER_VERSION }}
 
       - name: Install project dependencies
         run: flutter pub get