build-unit-test-docker: googletest: update to 1.14.0

The 1.14.0 release is now used in upstream poky.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I245eb5f352f823ffcbda215064cfbe07d5d93976
diff --git a/scripts/build-unit-test-docker b/scripts/build-unit-test-docker
index 35ed069..1798989 100755
--- a/scripts/build-unit-test-docker
+++ b/scripts/build-unit-test-docker
@@ -132,9 +132,8 @@
             f"cp include/function2/function2.hpp {prefix}/include/function2/",
         ],
     ),
-    # release-1.13.0
     "google/googletest": PackageDef(
-        rev="b796f7d44681514f58a683a3a71ff17c94edb0c1",
+        rev="v1.14.0",
         build_type="cmake",
         config_env=["CXXFLAGS=-std=c++20"],
         config_flags=["-DTHREADS_PREFER_PTHREAD_FLAG=ON"],