Bump melos from 4.1.0 to 6.0.0

Bumps [melos](https://github.com/invertase/melos/tree/main/packages) from 4.1.0 to 6.0.0.
- [Release notes](https://github.com/invertase/melos/releases)
- [Changelog](https://github.com/invertase/melos/blob/main/CHANGELOG.md)
- [Commits](https://github.com/invertase/melos/commits/melos-v6.0.0/packages)

---
updated-dependencies:
- dependency-name: melos
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pubspec.lock

@@ -389,10 +389,10 @@ packages:
     dependency: "direct main"
     description:
       name: melos
-      sha256: "7266e9fc9fee5f4a0c075e5cec375c00736dfc944358f533b740b93b3d8d681e"
+      sha256: f9a6fc4f4842b7edfca2e00ab3b5b06928584f24bdc3d776ab0b30be7d599450
       url: "https://pub.dev"
     source: hosted
-    version: "4.1.0"
+    version: "6.0.0"
   merlin:
     dependency: transitive
     description:

pubspec.yaml

@@ -11,7 +11,7 @@ dev_dependencies:
 
 dependencies:
   coverage: ^1.7.1
-  melos: ^4.1.0
+  melos: ">=4.1.0 <7.0.0"
   signer: 
     git:
       url: https://github.com/codescalers/tfgrid-sdk-dart.git