Lock postcss-nested to 5.0.1

Migrating to visitor API in 5.0.2 breaks a lot of things.

package.json

@@ -23,8 +23,7 @@
     "rebuild-fixtures": "npm run babelify && babel-node scripts/rebuildFixtures.js",
     "prepublishOnly": "npm run babelify && babel-node scripts/build.js",
     "style": "eslint .",
-    "test": "jest --setupTestFrameworkScriptFile=\"./jest/customMatchers.js\"",
-    "test:jit": "cross-env TAILWIND_MODE=build jest ./jit/tests --setupTestFrameworkScriptFile=\"./jit/tests/_customMatchers.js\"",
+    "test": "cross-env TAILWIND_MODE=build jest",
     "posttest": "npm run style",
     "compat": "node scripts/compat.js --prepare",
     "compat:restore": "node scripts/compat.js --restore"
@@ -81,7 +80,7 @@
     "parse-glob": "^3.0.4",
     "postcss-functions": "^3",
     "postcss-js": "^3.0.3",
-    "postcss-nested": "^5.0.5",
+    "postcss-nested": "5.0.1",
     "postcss-selector-parser": "^6.0.4",
     "postcss-value-parser": "^4.1.0",
     "pretty-hrtime": "^1.0.3",
@@ -109,6 +108,9 @@
   },
   "jest": {
     "testTimeout": 30000,
+    "setupFilesAfterEnv": [
+      "<rootDir>/jest/customMatchers.js"
+    ],
     "testPathIgnorePatterns": [
       "<rootDir>/__tests__/fixtures/",
       "<rootDir>/__tests__/util/"

yarn.lock

@@ -4851,10 +4851,10 @@ postcss-load-config@^3.0.0:
     cosmiconfig "^7.0.0"
     import-cwd "^3.0.0"
 
-postcss-nested@^5.0.5:
-  version "5.0.5"
-  resolved "https://registry.yarnpkg.com/postcss-nested/-/postcss-nested-5.0.5.tgz"
-  integrity sha512-GSRXYz5bccobpTzLQZXOnSOfKl6TwVr5CyAQJUPub4nuRJSOECK5AqurxVgmtxP48p0Kc/ndY/YyS1yqldX0Ew==
+postcss-nested@5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/postcss-nested/-/postcss-nested-5.0.1.tgz#e7a77f7a806a09c8de0f2c163d8e3d09f00f3139"
+  integrity sha512-ZHNSAoHrMtbEzjq+Qs4R0gHijpXc6F1YUv4TGmGaz7rtfMvVJBbu5hMOH+CrhEaljQpEmx5N/P8i1pXTkbVAmg==
   dependencies:
     postcss-selector-parser "^6.0.4"