deps: Upgrade Flutter to 3.26.0-1.0.pre.249

And update Flutter's supporting libraries to match.

Author: rajveermalviya

pubspec.lock

@@ -1276,10 +1276,10 @@ packages:
     dependency: transitive
     description:
       name: vm_service
-      sha256: "5c5f338a667b4c644744b661f309fb8080bb94b18a7e91ef1dbd343bed00ed6d"
+      sha256: f6be3ed8bd01289b34d679c2b62226f63c0e69f9fd2e50a6b3c1c729a961041b
       url: "https://pub.dev"
     source: hosted
-    version: "14.2.5"
+    version: "14.3.0"
   wakelock_plus:
     dependency: "direct main"
     description:
@@ -1392,5 +1392,5 @@ packages:
     source: path
     version: "0.0.1"
 sdks:
-  dart: ">=3.6.0-263.0.dev <4.0.0"
-  flutter: ">=3.26.0-1.0.pre.155"
+  dart: ">=3.6.0-279.0.dev <4.0.0"
+  flutter: ">=3.26.0-1.0.pre.249"

pubspec.yaml

@@ -14,8 +14,8 @@ environment:
   # We use a recent version of Flutter from its main channel, and
   # the corresponding recent version of the Dart SDK.
   # Feel free to update these regularly; see README.md for instructions.
-  sdk: '>=3.6.0-263.0.dev <4.0.0'
-  flutter: '>=3.26.0-1.0.pre.155'
+  sdk: '>=3.6.0-279.0.dev <4.0.0'
+  flutter: '>=3.26.0-1.0.pre.249'
 
 # To update dependencies, see instructions in README.md.
 dependencies: