meta: update caching and eslint configs

.eslintrc.json

···
   "extends": ["prettier"],
   "overrides": [
     {
+      "files": ["public/**/*.js"],
+      "extends": ["eslint:recommended"],
+      "env": { "es6": true, "browser": true }
+    },
+    {
       "files": ["**/*.{js,mjs,ts,tsx}"],
       "extends": ["eslint:recommended"],
-      "env": { "jest": true, "es6": true, "browser": true }
+      "env": { "es6": true, "node": true }
+    },
+    {
+      "files": ["**/__tests__/*.mjs"],
+      "extends": ["eslint:recommended"],
+      "env": { "jest": true, "es6": true, "node": true }
     },
     {
       "files": ["**/*.{mjs,ts,tsx,mdx}"],

.lintstagedrc.json

···
 {
-  "**/*.{mjs,ts,tsx,md,mdx}": ["eslint --fix", "prettier --check --write"],
+  "**/*.{js,mjs,ts,tsx,md,mdx}": ["eslint --fix", "prettier --check --write"],
   "**/*.css": ["stylelint --allow-empty-input", "prettier --write"],
   "**/*.{json,yml}": ["prettier --check --write"]
 }

package.json

···
     "build": "cross-env NODE_NO_WARNINGS=1 next build",
     "start": "cross-env NODE_NO_WARNINGS=1 next start",
     "deploy": "cross-env NEXT_STATIC_EXPORT=true npm run build",
-    "lint:js": "eslint \"**/*.{mjs,ts,tsx}\" --cache --cache-strategy content --cache-file .eslintjscache",
-    "lint:md": "eslint \"**/*.md?(x)\" --cache --cache-strategy content --cache-file .eslintmdcache",
+    "lint:js": "eslint \"**/*.{js,mjs,ts,tsx}\" --cache --cache-strategy metadata --cache-file .eslintjscache",
+    "lint:md": "eslint \"**/*.md?(x)\" --cache --cache-strategy metadata --cache-file .eslintmdcache",
     "lint:css": "stylelint --allow-empty-input \"**/*.css\"",
     "lint": "npm run lint:js && npm run lint:md && npm run lint:css",
     "lint:fix": "npm run lint:js -- --fix && npm run lint:md -- --fix && npm run lint:css -- --fix",
-    "prettier": "prettier \"**/*.{mjs,ts,tsx,md,mdx,json,yml,css,sass,scss}\" --check --cache --cache-strategy content --cache-location=.prettiercache",
+    "prettier": "prettier \"**/*.{js,mjs,ts,tsx,md,mdx,json,yml,css,sass,scss}\" --check --cache --cache-strategy metadata --cache-location=.prettiercache",
     "prettier:fix": "npm run prettier -- --write",
     "format": "npm run lint:fix && npm run prettier:fix",
     "storybook": "cross-env NODE_NO_WARNINGS=1 storybook dev -p 6006 --quiet --no-open",