deps: Upgrade share_plus{,_platform_interface} enabling more upgrades

Done with:

  flutter pub upgrade --major-versions share_plus{,_platform_interface}
(then commit, for the sake of a no-uncommitted-files check)
  tools/upgrade pub
(then squash)

See discussion:
  https://chat.zulip.org/#narrow/channel/243-mobile-team/topic/deps.3A.20running.20.60tools.2Fupgrade.20pub.60.20twice/near/2013483

All the Firebase packages are now upgraded to latest; none of them
appear in the `flutter pub outdated` list.

This seems to have unlocked upgrading `drift` too. Some followups
were needed:

- ran `tools/check drift --all --fix`

- ran `tools/check build_runner --all --fix`

- followed an instruction from the analyzer:

  info • 'package:drift_dev/api/migrations.dart' is deprecated and
    shouldn't be used. Import `package:drift/migrations_native.dart`
    instead • test/model/database_test.dart:4:1 •
    deprecated_member_use

Greg pointed out that it's awkward that some Drift files change, but
he found that they're not substantive changes, so it's fine:
  #1184 (comment)
  #1184 (comment)

ios/Podfile.lock

@@ -37,19 +37,19 @@ PODS:
   - file_picker (0.0.1):
     - DKImagePickerController/PhotoGallery
     - Flutter
-  - Firebase/CoreOnly (11.0.0):
-    - FirebaseCore (= 11.0.0)
-  - Firebase/Messaging (11.0.0):
+  - Firebase/CoreOnly (11.4.0):
+    - FirebaseCore (= 11.4.0)
+  - Firebase/Messaging (11.4.0):
     - Firebase/CoreOnly
-    - FirebaseMessaging (~> 11.0.0)
-  - firebase_core (3.4.0):
-    - Firebase/CoreOnly (= 11.0.0)
+    - FirebaseMessaging (~> 11.4.0)
+  - firebase_core (3.9.0):
+    - Firebase/CoreOnly (= 11.4.0)
     - Flutter
-  - firebase_messaging (15.1.0):
-    - Firebase/Messaging (= 11.0.0)
+  - firebase_messaging (15.1.6):
+    - Firebase/Messaging (= 11.4.0)
     - firebase_core
     - Flutter
-  - FirebaseCore (11.0.0):
+  - FirebaseCore (11.4.0):
     - FirebaseCoreInternal (~> 11.0)
     - GoogleUtilities/Environment (~> 8.0)
     - GoogleUtilities/Logger (~> 8.0)
@@ -60,7 +60,7 @@ PODS:
     - GoogleUtilities/Environment (~> 8.0)
     - GoogleUtilities/UserDefaults (~> 8.0)
     - PromisesObjC (~> 2.4)
-  - FirebaseMessaging (11.0.0):
+  - FirebaseMessaging (11.4.0):
     - FirebaseCore (~> 11.0)
     - FirebaseInstallations (~> 11.0)
     - GoogleDataTransport (~> 10.0)
@@ -217,13 +217,13 @@ SPEC CHECKSUMS:
   DKImagePickerController: 946cec48c7873164274ecc4624d19e3da4c1ef3c
   DKPhotoGallery: b3834fecb755ee09a593d7c9e389d8b5d6deed60
   file_picker: 09aa5ec1ab24135ccd7a1621c46c84134bfd6655
-  Firebase: 9f574c08c2396885b5e7e100ed4293d956218af9
-  firebase_core: ceec591a66629daaee82d3321551692c4a871493
-  firebase_messaging: 15d8b557010f3bb7b98d0302e1c7c8fbcd244425
-  FirebaseCore: 3cf438f431f18c12cdf2aaf64434648b63f7e383
+  Firebase: cf1b19f21410b029b6786a54e9764a0cacad3c99
+  firebase_core: b62a5080210edad3f2934314a8b2c6f5124e8e10
+  firebase_messaging: 98619a0572d82cfb3668e78859ba9f1110e268c9
+  FirebaseCore: e0510f1523bc0eb21653cac00792e1e2bd6f1771
   FirebaseCoreInternal: d98ab91e2d80a56d7b246856a8885443b302c0c2
   FirebaseInstallations: 6ef4a1c7eb2a61ee1f74727d7f6ce2e72acf1414
-  FirebaseMessaging: d2d1d9c62c46dd2db49a952f7deb5b16ad2c9742
+  FirebaseMessaging: f8a160d99c2c2e5babbbcc90c4a3e15db036aee2
   Flutter: e0871f40cf51350855a761d2e70bf5af5b9b5de7
   GoogleDataTransport: aae35b7ea0c09004c3797d53c8c41f66f219d6a7
   GoogleUtilities: 26a3abef001b6533cf678d3eb38fd3f614b7872d
@@ -234,7 +234,7 @@ SPEC CHECKSUMS:
   path_provider_foundation: 2b6b4c569c0fb62ec74538f866245ac84301af46
   PromisesObjC: f5707f49cb48b9636751c5b2e7d227e43fba9f47
   SDWebImage: 73c6079366fea25fa4bb9640d5fb58f0893facd8
-  share_plus: 8875f4f2500512ea181eef553c3e27dba5135aad
+  share_plus: 8b6f8b3447e494cca5317c8c3073de39b3600d1f
   sqlite3: 7559e33dae4c78538df563795af3a86fc887ee71
   sqlite3_flutter_libs: 58ae36c0dd086395d066b4fe4de9cdca83e717b3
   SwiftyGif: 706c60cf65fa2bc5ee0313beece843c8eb8194d4