Bump minSdk from 28 to 29

[RichSutherSky]

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[Copilot]

Pull request overview

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Raises the Android minimum supported API level from 28 to 29 and updates related configuration/comments to reflect the new baseline.

Changes:

• Bump minSdk from 28 → 29 in shared SDK version constants.
• Bump minSdk from 28 → 29 in the Gradle Android configuration.
• Update a lint configuration comment to align with the new minSdk context.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 2 comments.

File	Description
lint.xml	Updates a comment describing why a lint check is ignored.
build-logic/conventions/src/main/kotlin/SdkVersions.kt	Raises MIN_SDK constant to 29.
android-configuration.gradle.kts	Raises defaultConfig.minSdk to 29.

[skyscanner-backpack-bot]

	Warnings
⚠️	One or more component files were updated, but the tests weren't updated. If your change is not covered by existing tests please add snapshot tests.
⚠️	One or more component files were updated, but the docs screenshots weren't updated. If the changes are visual or it is a new component please regenerate the screenshots via ./gradlew recordScreenshots.
⚠️	One or more component files were updated, but README.md wasn't updated. If your change contains API changes/additions or a new component please update the relevant component README.

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