fix: add @angular/animations as a peer dependency (#522)

Closes #519

Author: jvereecken

projects/testing-library/package.json

@@ -29,6 +29,7 @@
     "migrations": "./schematics/migrations/migrations.json"
   },
   "peerDependencies": {
+    "@angular/animations": ">= 17.0.0",
     "@angular/common": ">= 17.0.0",
     "@angular/platform-browser": ">= 17.0.0",
     "@angular/router": ">= 17.0.0",