Update pods to use latest stable versions (prep for 22.1 code freeze)

Notice that we also have a new major version of WordPressAuthenticator,
6.0.0, ready but that the upgrade to that one will happen in a dedicated
PR.

Podfile.lock

@@ -503,7 +503,7 @@ PODS:
   - WordPress-Aztec-iOS (1.19.8)
   - WordPress-Editor-iOS (1.19.8):
     - WordPress-Aztec-iOS (= 1.19.8)
-  - WordPressAuthenticator (5.6.0):
+  - WordPressAuthenticator (5.7.0):
     - GoogleSignIn (~> 6.0.1)
     - Gridicons (~> 1.0)
     - "NSURL+IDN (= 0.4)"
@@ -623,7 +623,6 @@ DEPENDENCIES:
 SPEC REPOS:
   https://github.com/wordpress-mobile/cocoapods-specs.git:
     - WordPressAuthenticator
-    - WordPressShared
   trunk:
     - Alamofire
     - AlamofireImage
@@ -662,6 +661,7 @@ SPEC REPOS:
     - WordPress-Aztec-iOS
     - WordPress-Editor-iOS
     - WordPressKit
+    - WordPressShared
     - WordPressUI
     - WPMediaPicker
     - wpxmlrpc
@@ -880,9 +880,9 @@ SPEC CHECKSUMS:
   UIDeviceIdentifier: e6a801d25f4f178de5bdf475ffe29050d0148176
   WordPress-Aztec-iOS: 7d11d598f14c82c727c08b56bd35fbeb7dafb504
   WordPress-Editor-iOS: 9eb9f12f21a5209cb837908d81ffe1e31cb27345
-  WordPressAuthenticator: 0a2a3699c6ddaabf4a5615f43729170f2bb3031a
+  WordPressAuthenticator: fc22569ef113e728823418120014725a7fdee8df
   WordPressKit: a161c49306369cfa22c648866cee5aba16d7cbac
-  WordPressShared: 8e59bc8cec256f54a7c4cc6c94911adc2a9a65d2
+  WordPressShared: 0aa459e5257a77184db87805a998f447443c9706
   WordPressUI: c5be816f6c7b3392224ac21de9e521e89fa108ac
   WPMediaPicker: 0d45dfd7b3c5651c5236ffd48c1b0b2f60a2d5d2
   wpxmlrpc: 68db063041e85d186db21f674adf08d9c70627fd