build(deps-dev): bump ajv-formats from 2.1.1 to 3.0.1

Bumps [ajv-formats](https://github.com/ajv-validator/ajv-formats) from 2.1.1 to 3.0.1.
- [Release notes](https://github.com/ajv-validator/ajv-formats/releases)
- [Commits](ajv-validator/ajv-formats@v2.1.1...v3.0.1)

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

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

Author: dependabot[bot]

package-lock.json

@@ -1,7 +1,7 @@
 {
   "devDependencies": {
     "ajv-cli": "5.0.0",
-    "ajv-formats": "2.1.1",
+    "ajv-formats": "3.0.1",
     "github-label-sync": "2.3.1",
     "markdown-link-check": "3.11.2",
     "markdown-toc": "1.2.0",