upgrade yarn and suppress peer dep warnings

.yarnrc.yml

@@ -4,17 +4,19 @@ nmMode: hardlinks-global
 
 nodeLinker: node-modules
 
+logFilters:
+  - code: YN0002
+    level: discard
+  - code: YN0060
+    level: discard
+
 packageExtensions:
   fxa-pairing-channel@*:
     dependencies:
       webpack: ^4.43.0
 
 plugins:
-  - path: .yarn/plugins/@yarnpkg/plugin-typescript.cjs
-    spec: "@yarnpkg/plugin-typescript"
-  - path: .yarn/plugins/@yarnpkg/plugin-workspace-tools.cjs
-    spec: "@yarnpkg/plugin-workspace-tools"
   - path: .yarn/plugins/@yarnpkg/plugin-outdated.cjs
     spec: "https://mskelton.dev/yarn-outdated/v2"
 
-yarnPath: .yarn/releases/yarn-3.3.0.cjs
+yarnPath: .yarn/releases/yarn-4.9.2.cjs

package.json

@@ -280,7 +280,7 @@
     "protobufjs:>6.0.0 <7": ">=6.11.4",
     "underscore": ">=1.13.2"
   },
-  "packageManager": "yarn@3.3.0",
+  "packageManager": "yarn@4.9.2",
   "_moduleAliases": {
     "@fxa/vendored/jwtool": "./dist/libs/vendored/jwtool/main.cjs",
     "@fxa/vendored/crypto-relier": "./dist/libs/vendored/crypto-relier/main.cjs",