Bump istanbul-lib-source-maps from 4.0.1 to 5.0.4 (#12419)

Bumps [istanbul-lib-source-maps](https://github.com/istanbuljs/istanbuljs/tree/HEAD/packages/istanbul-lib-source-maps) from 4.0.1 to 5.0.4.
- [Release notes](https://github.com/istanbuljs/istanbuljs/releases)
- [Changelog](https://github.com/istanbuljs/istanbuljs/blob/main/packages/istanbul-lib-source-maps/CHANGELOG.md)
- [Commits](https://github.com/istanbuljs/istanbuljs/commits/istanbul-lib-source-maps-v5.0.4/packages/istanbul-lib-source-maps)

---
updated-dependencies:
- dependency-name: istanbul-lib-source-maps
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

packages/wdio-browser-runner/package.json

@@ -52,7 +52,7 @@
     "import-meta-resolve": "^4.0.0",
     "istanbul-lib-coverage": "^3.2.0",
     "istanbul-lib-report": "^3.0.0",
-    "istanbul-lib-source-maps": "^4.0.1",
+    "istanbul-lib-source-maps": "^5.0.4",
     "istanbul-reports": "^3.1.5",
     "mlly": "^1.4.0",
     "modern-node-polyfills": "^1.0.0",