Update com_google_googletest digest to 728ec52 (#262)

[![Mend
Renovate](https://app.renovatebot.com/images/banner.svg)](https://renovatebot.com)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| com_google_googletest | http_archive | digest | `af5ddbd` -> `728ec52`
|

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR has been generated by [Mend
Renovate](https://www.mend.io/free-developer-tools/renovate/). View
repository job log
[here](https://developer.mend.io/github/seaube/bazel_sundry).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNi44My4wIiwidXBkYXRlZEluVmVyIjoiMzYuODMuMCIsInRhcmdldEJyYW5jaCI6Im1haW4ifQ==-->

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

WORKSPACE.bazel

@@ -4,9 +4,9 @@ load("@bazel_tools//tools/build_defs/repo:http.bzl", "http_archive")
 
 http_archive(
     name = "com_google_googletest",
-    sha256 = "4803ec12e35f8e6e1254003f41bea93f94c0acbca2c1fcd3020304c8d675397c",
-    strip_prefix = "googletest-af5ddbde4d57b0331e1d0ed3659ca2e39b37580d",
-    url = "https://github.com/google/googletest/archive/af5ddbde4d57b0331e1d0ed3659ca2e39b37580d.zip",
+    sha256 = "6f5c5abb61d22c4cd5e266f1411adf16814926542d91937ef305972d4b02edac",
+    strip_prefix = "googletest-728ec52d2167f61fad5672c3073d72d49a4482df",
+    url = "https://github.com/google/googletest/archive/728ec52d2167f61fad5672c3073d72d49a4482df.zip",
 )
 
 http_archive(