chore(deps): bump pigeon

Bumps the pigeon group in /packages/analytics/amplify_analytics_pinpoint with 1 update: [pigeon](https://github.com/flutter/packages/tree/main/packages).


Updates `pigeon` from 25.5.0 to 26.0.0
- [Release notes](https://github.com/flutter/packages/releases)
- [Commits](https://github.com/flutter/packages/commits/pigeon-v26.0.0/packages)

---
updated-dependencies:
- dependency-name: pigeon
  dependency-version: 26.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: pigeon
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

packages/analytics/amplify_analytics_pinpoint/pubspec.yaml

@@ -36,7 +36,7 @@ dev_dependencies:
   amplify_lints: ">=3.1.3 <3.2.0"
   flutter_test:
     sdk: flutter
-  pigeon: ^25.5.0
+  pigeon: ">=25.5.0 <27.0.0"
 
 flutter:
   plugin: