Upgrade Cypress to 8.7.0, remove --headless flag in test command

Author: tannerdolby

package.json

@@ -12,7 +12,7 @@
     "build:warnings-only": "sass --no-source-map src/warnings/checka11y-warnings.scss ./checka11y-warnings.css --style=compressed && sass --no-source-map ./checka11y-warnings.css ./checka11y-warnings.css --style=expanded && npx postcss checka11y-warnings.css --use autoprefixer --replace --no-map",
     "lint:check": "stylelint \"**/*.scss\" --max-warnings=0 --ignore-path .gitignore",
     "lint:fix": "stylelint \"**/*.scss\" --max-warnings=0 --ignore-path .gitignore --fix",
-    "test": "cypress run --headless",
+    "test": "cypress run",
     "test:ui": "cypress open",
     "has-no-changes": "is-git-status-clean"
   },
@@ -66,7 +66,7 @@
   ],
   "devDependencies": {
     "autoprefixer": "^10.3.7",
-    "cypress": "^6.9.1",
+    "cypress": "^8.7.0",
     "git-branch-is": "^4.0.0",
     "is-git-status-clean": "^1.0.0",
     "postcss": "^8.3.9",