Updated google_mobile_ads direct dependencies

[LTPhantom]

Description

• Update webview plugin android dependency

Related Issues

• google_mobile_ads 5.2.0 not compatible with webview_flutter >=4.10.0 #1200

Checklist

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• I read the Contributor Guide and followed the process outlined there for submitting PRs.
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Breaking Change

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• Yes, this is a breaking change (please indicate a breaking change in CHANGELOG.md and increment major revision).
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