Added F-Droid signing key to assetlinks.json. #389

This is where it's especially great that JSON is too retarded to support comments, so hopefully if I ever know which key is mine I'll still figure that out quickly. O_o

ggt/assetlinks.json

@@ -7,7 +7,8 @@
       "namespace": "android_app",
       "package_name": "net.gaast.giggity",
       "sha256_cert_fingerprints": [
-        "99:A5:DE:A0:63:C4:27:9F:42:09:3A:3B:97:92:94:DD:04:86:1F:7D:C8:68:77:8B:CB:36:2B:A5:EB:CF:E4:7F"
+        "99:A5:DE:A0:63:C4:27:9F:42:09:3A:3B:97:92:94:DD:04:86:1F:7D:C8:68:77:8B:CB:36:2B:A5:EB:CF:E4:7F",
+        "43:23:8d:51:2c:1e:5e:b2:d6:56:9f:4a:3a:fb:f5:52:34:18:b8:2e:0a:3e:d1:55:27:70:ab:b9:a9:c9:cc:ab"
       ]
     }
   }