build(deps): bump validator from 13.15.0 to 13.15.15 in /webapp (#8622)

Bumps [validator](https://github.com/validatorjs/validator.js) from 13.15.0 to 13.15.15.
- [Release notes](https://github.com/validatorjs/validator.js/releases)
- [Changelog](https://github.com/validatorjs/validator.js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/validatorjs/validator.js/compare/13.15.0...13.15.15)

---
updated-dependencies:
- dependency-name: validator
  dependency-version: 13.15.15
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

webapp/package.json

@@ -53,7 +53,7 @@
     "trunc-html": "^1.1.2",
     "v-mapbox": "^1.11.2",
     "v-tooltip": "~2.1.3",
-    "validator": "^13.15.0",
+    "validator": "^13.15.15",
     "vue-advanced-chat": "^2.0.11",
     "vue-count-to": "~1.0.13",
     "vue-infinite-loading": "^2.4.5",

webapp/yarn.lock

@@ -19638,10 +19638,10 @@ validate-npm-package-license@^3.0.1:
     spdx-correct "^3.0.0"
     spdx-expression-parse "^3.0.0"
 
-validator@^13.15.0:
-  version "13.15.0"
-  resolved "https://registry.yarnpkg.com/validator/-/validator-13.15.0.tgz#2dc7ce057e7513a55585109eec29b2c8e8c1aefd"
-  integrity sha512-36B2ryl4+oL5QxZ3AzD0t5SsMNGvTtQHpjgFO5tbNxfXbMFkY822ktCDe1MnlqV3301QQI9SLHDNJokDI+Z9pA==
+validator@^13.15.15:
+  version "13.15.15"
+  resolved "https://registry.yarnpkg.com/validator/-/validator-13.15.15.tgz#246594be5671dc09daa35caec5689fcd18c6e7e4"
+  integrity sha512-BgWVbCI72aIQy937xbawcs+hrVaN/CZ2UwutgaJ36hGqRrLNM+f5LUT/YPRbo8IV/ASeFzXszezV+y2+rq3l8A==
 
 vary@^1, vary@^1.1.2, vary@~1.1.2:
   version "1.1.2"