chore(deps): update flutter version

Author: realth000

.github/workflows/release_build.yml

@@ -6,7 +6,7 @@ on:
       - 'v*'
 
 env:
-  CI_FLUTTER_VERSION: '3.32.6' # Do NOT remove or rename the variable otherwise will break FDroid workflows.
+  CI_FLUTTER_VERSION: '3.32.8' # Do NOT remove or rename the variable otherwise will break FDroid workflows.
   CI_RUST_VERSION: '1.83.0' # Keep a same rust version on all compile targets.
 
 jobs:

.github/workflows/test.yml

@@ -8,7 +8,7 @@ on:
   workflow_dispatch:
 
 env:
-  CI_FLUTTER_VERSION: '3.32.6'
+  CI_FLUTTER_VERSION: '3.32.8'
 
 jobs:
   flutter_test:

.github/workflows/test_build.yml

@@ -38,7 +38,7 @@ on:
         default: true
 
 env:
-  CI_FLUTTER_VERSION: '3.32.6'
+  CI_FLUTTER_VERSION: '3.32.8'
   CI_RUST_VERSION: '1.83.0'
 
 jobs:

pubspec.yaml

@@ -98,8 +98,7 @@ dependency_overrides:
       path: pkgs/jni
 
 dev_dependencies:
-  # Pinned on 2.4.x version for working with null-aware-elements issue in GitHub CI.
-  build_runner: 2.4.15
+  build_runner: 2.5.4
   custom_lint: ^0.7.6
   dart_mappable_builder: ^4.5.0
   flutter_launcher_icons: ^0.14.4