chore(deps): update dependency providers/openfeature-provider-flagd/openfeature/test-harness to v2.11.1 (#297)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.gitmodules

@@ -8,4 +8,4 @@
 [submodule "providers/openfeature-provider-flagd/openfeature/test-harness"]
 	path = providers/openfeature-provider-flagd/openfeature/test-harness
 	url = https://github.com/open-feature/flagd-testbed.git
-	branch = v2.10.2
+	branch = v2.11.1