docs(core): Dropping ng8 & adding ng13 to readme (#3058)

Author: jamesdaniels

CHANGELOG.md

@@ -3,7 +3,7 @@
 
 ### Features
 
-* **core:** marking as compatible with Angular 13 peer ([#3057](https://github.com/angular/angularfire/pull/3057))
+* **core:** marking as compatible with Angular 13 peer ([#3057](https://github.com/angular/angularfire/pull/3057)) ([390691b](https://github.com/angular/angularfire/commit/390691b))
 
 ### Bug Fixes
 

README.md

@@ -66,15 +66,14 @@ AngularFire doesn't follow Angular's versioning as Firebase also has breaking ch
 
 | Angular | Firebase | AngularFire  |
 | --------|----------|--------------|
+| 13      | 9        | ^7.2         |
 | 12      | 9        | ^7.0         |
 | 12      | 7,8      | ^6.1.5       |
 | 11      | 7,8      | ^6.1         |
 | 10      | 8        | ^6.0.4       |
 | 10      | 7        | ^6.0.3       |
 | 9       | 8        | ^6.0.4       |
 | 9       | 7        | ^6.0         |
-| 8       | 7        | ^5.2.3       |
-| 8       | 6        | ^5.2.0       |
 
 <sub>Version combinations not documented here __may__ work but are untested and you will see NPM peer warnings.</sub>