chore(deps): bump preact-render-to-string from 6.3.1 to 6.4.0 (#960)

Bumps [preact-render-to-string](https://github.com/developit/preact-render-to-string) from 6.3.1 to 6.4.0.
- [Release notes](https://github.com/developit/preact-render-to-string/releases)
- [Changelog](https://github.com/preactjs/preact-render-to-string/blob/main/CHANGELOG.md)
- [Commits](https://github.com/developit/preact-render-to-string/compare/v6.3.1...6.4.0)

---
updated-dependencies:
- dependency-name: preact-render-to-string
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

package.json

@@ -58,7 +58,7 @@
     "mdast-util-to-string": "^4.0.0",
     "micromorph": "^0.4.5",
     "preact": "^10.19.6",
-    "preact-render-to-string": "^6.3.1",
+    "preact-render-to-string": "^6.4.0",
     "pretty-bytes": "^6.1.1",
     "pretty-time": "^1.1.0",
     "reading-time": "^1.5.0",