Update com_google_googletest digest to 46db91e (#236)

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This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| com_google_googletest | http_archive | digest | `6abc9e3` -> `46db91e`
|

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WORKSPACE.bazel

@@ -4,9 +4,9 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 http_archive(
     name = "com_google_googletest",
-    sha256 = "2bf4c9977fdaae870f1f3a67f157c63465c96bfa17fbf718769ec38c3e4459a1",
-    strip_prefix = "googletest-6abc9e3d791ecac53361832bc4c14b6203daff4b",
-    url = "https://github.com/google/googletest/archive/6abc9e3d791ecac53361832bc4c14b6203daff4b.zip",
+    sha256 = "0679a7cdbe91f96c5c610ac65dc95ab587ee93bb298489dc2f287ea32da7e4bb",
+    strip_prefix = "googletest-46db91ef6ffcc128b2d5f31118ae1108109e3400",
+    url = "https://github.com/google/googletest/archive/46db91ef6ffcc128b2d5f31118ae1108109e3400.zip",
 )
 
 http_archive(