chore(deps): update dependency flutter to v3.44.8

[renovate]

This PR contains the following updates:

Package	Update	Change
flutter (source)	patch	3.44.5 → 3.44.8

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Release Notes

flutter/flutter (flutter)

v3.44.8

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v3.44.7

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• flutter/188161 Fixes a resource leak that sometimes caused crashes when using external textures on some GPUs (such as Arm Mali).

v3.44.6

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• flutter/187980 On Linux, building asset bundles with native assets enabled without a native app build directory crashes due to missing CMakeCache.txt.
• flutter/188805 Fixes a crash when running Android instrumented tests.

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