chore!: Upgrade to Flutter 3.13.0

[Gustl22]

Description

• Adapt linting
• audioplayers_linux: raise min Flutter version to 3.13.0 due to Roll Flutter Engine from 317673b3278a to 88ff46e1efc1 (1 revision) flutter/flutter#129534
• Raise min testing Flutter version to 3.13.0 due to Roll Flutter Engine from 317673b3278a to 88ff46e1efc1 (1 revision) flutter/flutter#129534, Support minifcation for apps that depend on AGP 8 and integration_test flutter/flutter#127628, Smallest change required to support host apps using agp 8.0 flutter/flutter#125657

Checklist

• The title of my PR starts with a Conventional Commit prefix (fix:, feat:, refactor:,
  docs:, chore:, test:, ci: etc).
• I have read the Contributor Guide and followed the process outlined for submitting PRs.
• I have updated/added tests for ALL new/updated/fixed functionality.
• I have updated/added relevant documentation and added dartdoc comments with ///, where necessary.
• I have updated/added relevant examples in example.

Breaking Change

• Yes, this is a breaking change.
• No, this is not a breaking change.

Migration instructions

If using platform linux change pubspec.yaml:

Before:

environment:
  flutter: '>=3.10.x'

After:

environment:
  flutter: '>=3.13.0'

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