Bump constraintlayout from 2.0.4 to 2.1.2

Bumps [constraintlayout](https://github.com/androidx/constraintlayout) from 2.0.4 to 2.1.2.
- [Release notes](https://github.com/androidx/constraintlayout/releases)
- [Commits](https://github.com/androidx/constraintlayout/commits)

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

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

Author: dependabot[bot]

example_app/build.gradle

@@ -43,7 +43,7 @@ dependencies {
     implementation 'com.squareup.picasso:picasso:2.71828'
 
     implementation 'androidx.recyclerview:recyclerview:1.2.1'
-    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
+    implementation 'androidx.constraintlayout:constraintlayout:2.1.2'
 
     implementation "io.scanbot:scanbot-barcode-scanner-sdk:$sdkVersion"
     implementation "io.scanbot:scanbot-barcode-scanner-sdk-ui:$sdkVersion"