upgrade: update dependency melos to v7

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This PR contains the following updates:

Package	Type	Update	Change	Pending
melos (source)	dev_dependencies	major	^6.0.0 -> ^7.0.0	7.1.1

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Release Notes

invertase/melos (melos)

v7.1.0

Compare Source

• FEAT: Add useRootAsPackage for Melos 7.x root package support (#​927). (ade8443d)

v7.0.0

Compare Source

This version has all the changes from the 7.0.0-dev.x releases, and is the first stable release
of Melos that uses the Pub workspaces feature.

Note: This release has breaking changes.

• FIX: Update to Dart SDK 3.8.0 and preserve trailing commas (#​908). (eecfa4ea)
• FIX: Tags from origin should be source of truth (#​902). (9589803c)
• DOCS: add flutter_chat_ui (#​903). (190caf74)
• DOCS: add starknet.dart in projects list (#​896). (9faa3152)
• FIX: Fail early on steps and return error code (#​891). (7161ce8f)
• DOCS: add jaspr to projects (#​881). (926b6215)
• DOCS: Add Stac to the list of projects using Melos. (#​864). (8838863e)
• FIX: Remove old pubspec_overrides entries on clean (#​861). (d5a6ea67)
• DOCS: add ReactiveX/rxdart to README and docs (#​859). (303883b6)
• REFACTOR: optimize clean command by precomputing paths to clean (#​855). (daba40d4)
• FIX: Melos init adding empty string / list in pubspec.yaml (#​856). (50b102b3)
• FIX: Fix externally hosted versioning (#​852). (40476ed5)
• FEAT: Add support for executeInTerminal for IntelliJ run configs (#​857). (b6acf504)
• FEAT: Rollback on failed shared dependency resolution (#​848). (949c2f6c)
• DOCS: Rearrange repos using melos (#​845). (f744da86)
• FIX: Version package correctly (#​842). (a9fde62b)
• FIX: Properly format Git and HostedDependency (#​841). (a699139a)
• FIX: Run examples from own directory (#​834). (e4ade765)
• FIX: fix git dependencies comparison on bootstrap (#​659). (c5238cd0)
• FIX: Fixed versioning for nested version fields (#​831). (4def2093)
• BREAKING FEAT: Remove melos.yaml in favor of the root pubspec.yaml (#​832). (ade758c2)
• FIX: Relaxing file and platform dependency constraints
• FIX: Only run pub get in workspace root (#​822). (abb1e539)
• BREAKING FEAT: Migrate to use the Pub workspaces feature (#​816). (3602d904)

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