build-unit-test-docker: upgrade googletest to 1.12.1

This is the same version used in Yocto now.

Signed-off-by: Patrick Williams <patrick@stwcx.xyz>
Change-Id: I843a9da46b87ecc9363c2a9bbddfa22daab60b99
diff --git a/scripts/build-unit-test-docker b/scripts/build-unit-test-docker
index ccd9ab3..39f71de 100755
--- a/scripts/build-unit-test-docker
+++ b/scripts/build-unit-test-docker
@@ -122,9 +122,9 @@
             f"cp include/function2/function2.hpp {prefix}/include/function2/",
         ],
     ),
-    # Release 2021-06-12
+    # release-1.12.1
     "google/googletest": PackageDef(
-        rev="9e712372214d75bb30ec2847a44bf124d48096f3",
+        rev="58d77fa8070e8cec2dc1ed015d66b454c8d78850",
         build_type="cmake",
         config_env=["CXXFLAGS=-std=c++20"],
         config_flags=["-DTHREADS_PREFER_PTHREAD_FLAG=ON"],