Bump ajv from 6.12.2 to 6.12.6 (#133)

Bumps [ajv](https://github.com/ajv-validator/ajv) from 6.12.2 to 6.12.6.
- [Release notes](https://github.com/ajv-validator/ajv/releases)
- [Commits](https://github.com/ajv-validator/ajv/compare/v6.12.2...v6.12.6)

---
updated-dependencies:
- dependency-name: ajv
  dependency-type: indirect
...

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

package-lock.json

@@ -61,9 +61,9 @@
             "dev": true
         },
         "ajv": {
-            "version": "6.12.2",
+            "version": "6.12.6",
-            "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.2.tgz",
+            "resolved": "https://registry.npmjs.org/ajv/-/ajv-6.12.6.tgz",
-            "integrity": "sha512-k+V+hzjm5q/Mr8ef/1Y9goCmlsK4I6Sm74teeyGvFk1XrOsbsKLjEdrvny42CZ+a8sXbk8KWpY/bDwS+FLL2UQ==",
+            "integrity": "sha512-j3fVLgvTo527anyYyJOGTYJbG+vnnQYvE0m5mmkc1TK+nxAppkCLMIL0aZ4dblVCNoGShhm+kzE4ZUykBoMg4g==",
             "dev": true,
             "requires": {
                 "fast-deep-equal": "^3.1.1",