Update Firebase C++ and Unity SDK versions to 6.12.0, plus Unity guids.

jonsimantov · a-maurice · commit 9889df478edb · 2020-03-11T18:01:58.000-07:00
PiperOrigin-RevId: 297705681
diff --git a/cpp_sdk_version.json b/cpp_sdk_version.json
@@ -1,5 +1,5 @@
 {
-  "released": "6.11.0",
-  "stable": "6.11.0",
-  "head": "6.11.0"
+  "released": "6.12.0",
+  "stable": "6.12.0",
+  "head": "6.12.0"
 }
