Update dependency babel-plugin-istanbul to v7

Author: renovate[bot]

package.json

@@ -20,7 +20,7 @@
     "@babel/core": "7.28.3",
     "@cypress/code-coverage": "1.14.0",
     "babel-loader": "8.4.1",
-    "babel-plugin-istanbul": "5.2.0",
+    "babel-plugin-istanbul": "7.0.1",
     "babel-preset-env": "1.7.0",
     "babel-preset-stage-3": "6.24.1",
     "coveralls": "3.1.1",