revert: fix deps in package.json

I didn't realize this but our release-prep.sh script will accidentally update
all strings in the package.json that match the version udpate.

This means if a dependency is 4.0.0 and we're upgrading code-server to 4.0.1,
our script updates the dependency too.

Oops. Documented here: #4679

package.json

@@ -39,7 +39,7 @@
     "@types/cookie-parser": "^1.4.2",
     "@types/express": "^4.17.8",
     "@types/http-proxy": "^1.17.4",
-    "@types/js-yaml": "^4.0.1",
+    "@types/js-yaml": "^4.0.0",
     "@types/node": "^14.17.1",
     "@types/pem": "^1.9.5",
     "@types/proxy-from-env": "^1.0.1",
@@ -57,7 +57,7 @@
     "eslint-config-prettier": "^8.1.0",
     "eslint-import-resolver-typescript": "^2.5.0",
     "eslint-plugin-import": "^2.18.2",
-    "eslint-plugin-prettier": "^4.0.1",
+    "eslint-plugin-prettier": "^4.0.0",
     "prettier": "^2.2.1",
     "prettier-plugin-sh": "^0.8.0",
     "shellcheck": "^1.0.0",
@@ -88,7 +88,7 @@
     "express": "^5.0.0-alpha.8",
     "http-proxy": "^1.18.0",
     "httpolyglot": "^0.1.2",
-    "js-yaml": "^4.0.1",
+    "js-yaml": "^4.0.0",
     "limiter": "^1.1.5",
     "pem": "^1.14.2",
     "proxy-agent": "^5.0.0",
@@ -97,9 +97,9 @@
     "safe-buffer": "^5.1.1",
     "safe-compare": "^1.1.4",
     "semver": "^7.1.3",
-    "split2": "^4.0.1",
+    "split2": "^4.0.0",
     "ws": "^8.0.0",
-    "xdg-basedir": "^4.0.1",
+    "xdg-basedir": "^4.0.0",
     "yarn": "^1.22.4"
   },
   "bin": {