chore(deps): update dependency istanbul-lib-instrument to v6 (#598)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

packages/coverage-istanbul/package.json

@@ -27,7 +27,7 @@
     "istanbul-lib-coverage": "^3.2.2",
     "istanbul-lib-report": "^3.0.1",
     "istanbul-reports": "^3.2.0",
-    "istanbul-lib-instrument": "5.2.1"
+    "istanbul-lib-instrument": "6.0.3"
   },
   "devDependencies": {
     "@rstest/tsconfig": "workspace:*",