Update husky, automatically install husky on pnpm i (#847)

Fixes #836

Co-authored-by: Eric Fennis <eric.fennis@gmail.com>

package.json

@@ -17,7 +17,8 @@
     "generate:supersprite": "node ./scripts/generateSuperSVG.mjs",
     "optimize": "node ./scripts/optimizeSvgs.mjs",
     "addtags": "node ./scripts/addMissingKeysToTags.mjs",
-    "generate:changelog": "node ./scripts/generateChangelog.mjs"
+    "generate:changelog": "node ./scripts/generateChangelog.mjs",
+    "postinstall": "husky install"
   },
   "devDependencies": {
     "@atomico/rollup-plugin-sizes": "^1.1.4",
@@ -39,7 +40,7 @@
     "eslint-config-prettier": "^2.10.0",
     "eslint-plugin-import": "^2.26.0",
     "eslint-plugin-prettier": "^2.7.0",
-    "husky": "^4.3.8",
+    "husky": "^8.0.0",
     "jest": "^28.1.3",
     "lint-staged": "^10.5.4",
     "minimist": "^1.2.6",