Cherry-pick two 6.34.0 commits to master (#6688)

* Update changelogs (#6649)
* Speedup SwiftPM (#6687)

Co-authored-by: Morgan Chen <[email protected]>

Author: paulb777

Crashlytics/CHANGELOG.md

@@ -1,18 +1,22 @@
-# Unreleased
-- [changed] Improved upload-symbols conversion speed. Customers with large dSYMs should see a significant improvement in the it takes to upload Crashlytics symbols.
-- [fixed] Fixed Apple Watch crash related to sigaction (#6434).
+# v4.6.2
+
+- [changed] Improved upload-symbols conversion speed. Customers with large dSYMs should see a significant improvement in the time it takes to upload Crashlytics symbols.
+- [fixed] Fixed Apple Watch crash related to `sigaction` (#6434).
 
 # v4.6.0
+
 - [added] Added stackFrameWithAddress API for recording custom errors that are symbolicated on the backend (#5975).
 - [fixed] Fixed comment typos (#6363).
 - [fixed] Remove device information from binary image data crash info entries (#6382).
 
 # v4.5.0
+
 - [fixed] Fixed a compiler warning and removed unused networking code (#6210).
 - [fixed] Fixed a crash that occurred rarely when trying to restart a URL session task without a valid request (#5984).
 - [added] Introduced watchOS support (#6262).
 
 # v4.3.1
+
 - [fixed] Fixed a segmentation fault that could occur when writing crash contexts to disk (#6048).
 
 # v4.3.0

Firebase/InstanceID/CHANGELOG.md

@@ -2,7 +2,7 @@
 - [changed] Deprecated private `-[FIRInstanceID appInstanceID:]` method was removed. (#4486)
 
 # 2020-09 -- 4.7.0
-- [changed] Added deprecation warning for InstanceID. InstanceID is deprecated. For app instance identity handling, use FirebaseInstallations. For FCM registration token handling, use FirebaseMessaging. (#6585)
+- [deprecated] Deprecated InstanceID. For app instance identity handling, use FirebaseInstallations. For FCM registration token handling, use FirebaseMessaging. (#6585)
 
 # 2020-08 -- 4.6.0
 - [added] Added a new notification listening token refresh from Messaging and update the token cache in InstanceID. (#6286)

FirebaseStorage/CHANGELOG.md

@@ -2,6 +2,9 @@
 - [changed] The global variable `FIRStorageVersionString` is deleted.
   `FirebaseVersion.version()` or `[FIRVersion version]` should be used instead.
 
+# 3.8.1
+- [fixed] Fixed typo in doc comments (#6485).
+
 # 3.8.0
 - [changed] Add error for attempt to upload directory (#5750)
 - [changed] Functionally neutral source reorganization. (#5851)

Package.swift

@@ -106,13 +106,13 @@ let package = Package(
     ),
     .package(
       name: "abseil",
-      url: "https://github.com/firebase/abseil-cpp.git",
-      .revision("8ddf129163673642a339d7980327bcb2c117a28e")
+      url: "https://github.com/firebase/abseil-cpp-SwiftPM.git",
+      .revision("05d8107f2971a37e6c77245b7c4c6b0a7e97bc99")
     ),
     .package(
       name: "gRPC",
-      url: "https://github.com/firebase/grpc.git",
-      .revision("b22bc5256665ff2f1763505631df0ee60378b083")
+      url: "https://github.com/firebase/grpc-SwiftPM.git",
+      .revision("5bb2669317ae2183f4cb00c675423af1924f0b46")
     ),
     .package(
       name: "OCMock",