M69 changelog for GUL and FIS (#5411)

* M69 changelog for GUL and FIS

* Punctuation

FirebaseInstallations/CHANGELOG.md

@@ -1,3 +1,7 @@
+# v1.1.2 -- M69
+
+- [changed] Keychain key-value storage refactored to `GoogleUtilities`. (#5329)
+
 # v1.1.1 -- M67
 
 - [fixed] Accessing `GULHeartbeatDateStorage` moved out of main thread. (#5098)

GoogleUtilities/CHANGELOG.md

@@ -1,3 +1,7 @@
+# 6.6.0 -- M69
+- Keychain utilities and Keychain based key-value storage added to
+  `GoogleUtilities/Environment`. (#5329)
+
 # 6.5.2
 - Fixed an issue where GoogleUtilities misidentified Catalyst as a
   simulator runtime environment. (#5048)