Bump screenshot from 0.0.1-alpha11 to 0.0.1-alpha12

Bumps `screenshot` from 0.0.1-alpha11 to 0.0.1-alpha12.

Updates `com.android.tools.screenshot:screenshot-validation-api` from 0.0.1-alpha11 to 0.0.1-alpha12

Updates `com.android.compose.screenshot` from 0.0.1-alpha11 to 0.0.1-alpha12

---
updated-dependencies:
- dependency-name: com.android.tools.screenshot:screenshot-validation-api
  dependency-version: 0.0.1-alpha12
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: com.android.compose.screenshot
  dependency-version: 0.0.1-alpha12
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -4,7 +4,7 @@ kotlin = "2.2.21"
 dagger = "2.57.2"
 androidxComposeBom = "2025.12.01"
 hiltAndroidX = "1.3.0"
-screenshot = "0.0.1-alpha11"
+screenshot = "0.0.1-alpha12"
 
 [libraries]
 ktlint-cli = { group = "com.pinterest.ktlint", name = "ktlint-cli", version = "1.8.0" }