Bump androidx.camera:camera-extensions in /android-refimpl-app

Bumps androidx.camera:camera-extensions from 1.3.4 to 1.4.0.

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

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

Author: dependabot[bot]

android-refimpl-app/app/build.gradle

@@ -425,7 +425,7 @@ dependencies {
     implementation "androidx.camera:camera-lifecycle:1.3.4"
     implementation 'androidx.camera:camera-camera2:1.3.4'
     implementation 'androidx.camera:camera-view:1.3.4'
-    implementation 'androidx.camera:camera-extensions:1.3.4'
+    implementation 'androidx.camera:camera-extensions:1.4.0'
     //
     implementation 'com.github.zoff99:pkgs_TensorflowLiteAndroidMediapipeCPU:2.6.0'
     implementation 'com.github.zoff99:pkgs_TensorflowLiteAndroidMediapipeGPU:2.6.0'