[camera]: Bump camerax_version (#6709)

Bumps `camerax_version` from 1.2.0-rc01 to 1.3.0-alpha01.

Updates `camera-core` from 1.2.0-rc01 to 1.3.0-alpha01

Updates `camera-camera2` from 1.2.0-rc01 to 1.3.0-alpha01

Updates `camera-lifecycle` from 1.2.0-rc01 to 1.3.0-alpha01

---
updated-dependencies:
- dependency-name: androidx.camera:camera-core
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: androidx.camera:camera-camera2
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: androidx.camera:camera-lifecycle
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

packages/camera/camera_android_camerax/android/build.gradle

@@ -56,7 +56,7 @@ android {
 
 dependencies {
     // CameraX core library using the camera2 implementation must use same version number.
-    def camerax_version = "1.2.0-rc01"
+    def camerax_version = "1.3.0-alpha01"
     implementation "androidx.camera:camera-core:${camerax_version}"
     implementation "androidx.camera:camera-camera2:${camerax_version}"
     implementation "androidx.camera:camera-lifecycle:${camerax_version}"