prepare 5.0.3 release (#232)

## [5.0.3] - 2024-02-02
### Fixed:
- Fixes a bug in which a race condition between identify and network
state change could result in a crash.

---------

Co-authored-by: Ember Stevens <[email protected]>
Co-authored-by: Ember Stevens <[email protected]>
Co-authored-by: Todd Anderson <[email protected]>
Co-authored-by: tanderson-ld <[email protected]>
Co-authored-by: ld-repository-standards[bot] <113625520+ld-repository-standards[bot]@users.noreply.github.com>
Co-authored-by: Kane Parkinson <[email protected]>
Co-authored-by: LaunchDarklyReleaseBot <[email protected]>
Co-authored-by: Matthew M. Keeler <[email protected]>
Co-authored-by: Louis Chan <[email protected]>

Author: 8 people

launchdarkly-android-client-sdk/src/main/java/com/launchdarkly/sdk/android/ConnectivityManager.java

@@ -193,7 +193,7 @@ void setEvaluationContext(@NonNull LDContext newContext, @NonNull Callback<Void>
         }
     }
 
-    private boolean updateDataSource(
+    private synchronized boolean updateDataSource(
             boolean mustReinitializeDataSource,
             @NonNull Callback<Void> onCompletion
     ) {