Update packages.json & build-matrix.html

docs/build-matrix.html

@@ -979,7 +979,7 @@ feel free to submit a pull request.
 
 <tr>
  <th class="row" title=""> googletest  [source-only-pkg]  </th>
- <td>1.7.0 </td>
+ <td>1.8.1 </td>
     <td class="neutral">&bull;</td>
     <td class="neutral">&bull;</td>
     <td class="neutral">&bull;</td>

docs/packages.json

@@ -93,7 +93,7 @@
     "gmp": {"version": "6.1.2", "website": "https://gmplib.org/", "description": "GMP"},
     "gnutls": {"version": "3.6.8", "website": "https://www.gnu.org/software/gnutls/", "description": "GnuTLS"},
     "googlemock": {"version": "1.7.0", "website": "https://github.com/google/googlemock", "description": "Google Mock"},
-    "googletest": {"version": "1.7.0", "website": "https://github.com/google/googletest", "description": "Google Test"},
+    "googletest": {"version": "1.8.1", "website": "https://github.com/google/googletest", "description": "Google Test"},
     "gpgme": {"version": "1.12.0", "website": "https://www.gnupg.org/related_software/gpgme/", "description": "gpgme"},
     "graphicsmagick": {"version": "1.3.32", "website": "http://www.graphicsmagick.org/", "description": "GraphicsMagick"},
     "gsl": {"version": "2.5", "website": "https://www.gnu.org/software/gsl/", "description": "GSL"},