Bump flutter_zxing from 2.3.0 to 3.0.1

[dependabot]

Bumps flutter_zxing from 2.3.0 to 3.0.1.

Changelog

Sourced from flutter_zxing's changelog.

3.0.1

• Fixed pod install failing with "undefined method pod_target_xcconfig' for an instance of Pod::Specification" while loading the iOS and macOS podspecs. Pod::Specificationonly defines a writer forpod_target_xcconfig, so reading the value back to merge the NDEBUGsettings into it raised aNoMethodError`. All the settings are now assigned in a single hash. This affected 2.4.0 and 3.0.0; apps that build through Swift Package Manager were never affected.
• Android builds no longer write a NT_GNU_BUILD_ID note into libflutter_zxing.so. The note is derived from the build environment, which kept the resulting APK from being byte-for-byte reproducible — something F-Droid now requires. Note that Firebase Crashlytics for NDK relies on that note to symbolicate native crashes, so a crash inside this library will now be reported without symbols. Thanks to @​quandangv (#247).

3.0.0

Updates the bundled zxing-cpp from

Commits

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