increase sleep to "fix" flaky tests

Signed-off-by: christian.lutnik <[email protected]>

Author: chrfwow

providers/flagd/src/test/java/dev/openfeature/contrib/providers/flagd/e2e/steps/ProviderSteps.java

@@ -125,7 +125,7 @@ public void setupProvider(String providerType) throws InterruptedException {
                 .statusCode(200);
 
         // giving flagd a little time to start
-        Thread.sleep(100);
+        Thread.sleep(300);
         FeatureProvider provider =
                 new FlagdProvider(state.builder.resolverType(State.resolverType).build());