Fix Xcode 13 package manager warnings. (#8213)

* Fix Xcode 13 package manager warnings.

These excludes no longer exist in the repo. We should also figure out a
test to make sure these don't get re-introduced.

* Changelog

* Use version for CHANGELOG

Author: ryanwilson

FirebaseCore/CHANGELOG.md

@@ -1,5 +1,6 @@
 # Firebase 8.2.0
 - [fixed] Stop flooding Swift Package Manager projects with Firebase test schemes. (#8167)
+- [fixed] Removed "Invalid Exclude" warnings for Swift Package Manager using Xcode 13 beta 1.
 
 # Firebase 8.0.0
 - [removed] The deprecated Firebase InstanceID has been removed. Use Firebase Installations to manage

Package.swift

@@ -428,8 +428,6 @@ let package = Package(
         "CHANGELOG.md",
         "LICENSE",
         "README.md",
-        "Data/",
-        "Protos/",
         "ProtoSupport/",
         "UnitTests/",
         "generate_project.sh",
@@ -574,10 +572,8 @@ let package = Package(
         "third_party/",
 
         // Exclude alternate implementations for other platforms
-        "core/src/api/input_validation_std.cc",
         "core/src/remote/connectivity_monitor_noop.cc",
         "core/src/util/filesystem_win.cc",
-        "core/src/util/hard_assert_stdio.cc",
         "core/src/util/log_stdio.cc",
         "core/src/util/secure_random_openssl.cc",
       ],