chore: Upgrade to Yarn 4.x

Author: armandabric

.github/workflows/continuous-integration.yaml

@@ -10,7 +10,7 @@ jobs:
         with:
           node-version: '20'
           cache: 'yarn'
-      - run: yarn install --frozen-lockfile
+      - run: yarn install --immutable
       - run: yarn run test
       - run: yarn run lint
       - run: yarn run flow

.gitignore

@@ -1,4 +1,5 @@
-index-dist.js
-node_modules/
+.yarn/
 dist/
+node_modules/
+index-dist.js
 npm-debug.log

.yarnrc.yml

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

package.json

@@ -2,7 +2,7 @@
   "name": "react-element-to-jsx-string",
   "version": "16.0.0",
   "description": "Turn a ReactElement into the corresponding JSX string.",
-  "packageManager": "yarn@1.22.22+sha1.ac34549e6aa8e7ead463a7407e1c7390f61a6610",
+  "packageManager": "yarn@4.6.0",
   "main": "dist/cjs/index.js",
   "module": "dist/esm/index.js",
   "browser": "dist/cjs/index.js",