[CP-stable] Bump hotfix version for package:unified_analytics (flutter#143885)

This fixes flakey bug around parsing session json file by bumping to analytics package version to a hotfix
- flutter#143792

Author: eliasyishak

packages/flutter_tools/pubspec.yaml

@@ -51,7 +51,7 @@ dependencies:
   http_multi_server: 3.2.1
   convert: 3.1.1
   async: 2.11.0
-  unified_analytics: 5.8.0
+  unified_analytics: 5.8.0+1
 
   cli_config: 0.1.2
   graphs: 2.3.1
@@ -118,4 +118,4 @@ dartdoc:
   # Exclude this package from the hosted API docs.
   nodoc: true
 
-# PUBSPEC CHECKSUM: 45be
+# PUBSPEC CHECKSUM: a81b