Bump androidx.annotation:annotation from 1.7.1 to 1.8.1

Bumps androidx.annotation:annotation from 1.7.1 to 1.8.1.

---
updated-dependencies:
- dependency-name: androidx.annotation:annotation
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

lib/build.gradle

@@ -44,7 +44,7 @@ android {
 }
 
 dependencies {
-    implementation("androidx.annotation:annotation:1.7.1")
+    implementation("androidx.annotation:annotation:1.8.1")
     implementation("com.google.crypto.tink:tink-android:1.13.0")
 
     // Tests