chore: update Android minSdkVersion to 24

[AustinBenoit]

Description

Provide details of the change, and generalize the change in the PR title above.

chore: update Android minSdkVersion to 24

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Testing

Describe how you've tested these changes. Link any manually triggered Integration tests or CPP binary SDK Packaging Github Action workflows, if applicable.

Built Android SDK locally. Integration tests will be run

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Type of Change

Place an x the applicable box:

• Bug fix. Add the issue # below if applicable.
• New feature. A non-breaking change which adds functionality.
• Other, such as a build process or documentation change.

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Notes

• Bug fixes and feature changes require an update to the Release Notes section of release_build_files/readme.md.
• Read the contribution guidelines CONTRIBUTING.md.
• Changes to the public API require an internal API review. If you'd like to help us make Firebase APIs better, please propose your change in a feature request so that we can discuss it together.

[gemini-code-assist]

Code Review

This pull request updates the minSdkVersion from 23 to 24 across all Android modules, integration tests, and manifests, documenting this as a breaking change in the release notes. The feedback suggests adding a colon after 'Breaking Change' in the release notes for consistency with other entries.

[github-actions]

Integration test with FLAKINESS (succeeded after retry)

Requested by @AustinBenoit on commit 243527e
Last updated: Fri Oct 2 10:42 PDT 2026
View integration test log & download artifacts

Failures	Configs
app_check	[TEST] [FLAKINESS] [iOS] [macos] [1/2 ios_device: ios_target] (1 failed tests)   FirebaseAppCheckTest.TestSignIn
messaging	[TEST] [FLAKINESS] [Android] [1/3 os: ubuntu] [1/2 android_device: android_target] (1 failed tests)   FirebaseMessagingTest.TestRegisterAndUnregister [TEST] [FLAKINESS] [Android] [1/3 os: windows] [1/2 android_device: android_target] (1 failed tests)   CRASH/TIMEOUT

Add flaky tests to go/fpl-cpp-flake-tracker