Update dependency eslint-plugin-jsx-a11y to v6.8.0

Author: renovate[bot]

package.json

@@ -27,7 +27,7 @@
     "eslint-config-prettier": "8.10.0",
     "eslint-config-react-app": "6.0.0",
     "eslint-plugin-import": "2.29.1",
-    "eslint-plugin-jsx-a11y": "6.7.0",
+    "eslint-plugin-jsx-a11y": "6.8.0",
     "eslint-plugin-react": "7.31.11",
     "eslint-plugin-react-hooks": "4.6.0",
     "jest": "26.6.3",