Bump ava from 5.3.1 to 6.0.0

Bumps [ava](https://github.com/avajs/ava) from 5.3.1 to 6.0.0.
- [Release notes](https://github.com/avajs/ava/releases)
- [Commits](avajs/ava@v5.3.1...v6.0.0)

---
updated-dependencies:
- dependency-name: ava
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -75,7 +75,7 @@
   "devDependencies": {
     "@iktakahiro/markdown-it-katex": "4.0.1",
     "ajv": "8.12.0",
-    "ava": "5.3.1",
+    "ava": "6.0.0",
     "c8": "8.0.1",
     "cpy": "11.0.0",
     "cpy-cli": "5.0.0",