Change to yarn 2+ ("yarn berry")

Yarn 1 has been abandoned for quite a while.

Signed-off-by: Mark Yen <[email protected]>

Author: mook-as

.github/actions/yarn-install/action.yaml

@@ -39,7 +39,7 @@ runs:
     run: echo "M1=1" >> "${GITHUB_ENV}"
     shell: bash
 
-  - run: yarn install --frozen-lockfile
+  - run: yarn install --immutable
     shell: bash
 
   - name: Fix electron sandbox

.gitignore

@@ -19,3 +19,4 @@
 /resources/win32/
 /screenshots/output/
 /src/go/rdctl/pkg/options/generated/*.go
+/.yarn/

.yarnrc.yml

@@ -0,0 +1 @@
+nodeLinker: node-modules

package.json

@@ -11,7 +11,7 @@
     "node": "^22.14.0"
   },
   "type": "module",
-  "packageManager": "yarn@1.22.21",
+  "packageManager": "yarn@4.9.4",
   "repository": {
     "type": "git",
     "url": "https://github.com/rancher-sandbox/rancher-desktop.git"