M122.1 release notes update (#497)

* Update release readme info

* Update actions from using node12 to node16

* update upload-artifact

* test pod update to solve build failure

* Update ios target to 11.0

* don't need extra pod install

* update actions

* readme release note update

* add extra line

Co-authored-by: Cynthia Jiang <cynthiajiang@google.com>

Author: cynthiajoan

docs/readme.md

@@ -67,6 +67,11 @@ Support
 
 Release Notes
 -------------
+### 10.0.1
+- Changes
+    - Crashlytics (Android): Fixed a critical [issue](https://github.com/firebase/firebase-android-sdk/issues/4223) 
+      that was causing background crashes in specific cases.
+
 ### 10.0.0
 - Changes
     - General: Updated Firebase C++ SDK dependencies to v10.0.0.