[Security] Bump y18n from 4.0.0 to 4.0.3

Bumps [y18n](https://github.com/yargs/y18n) from 4.0.0 to 4.0.3. **This update includes a security fix.**
- [Release notes](https://github.com/yargs/y18n/releases)
- [Changelog](https://github.com/yargs/y18n/blob/y18n-v4.0.3/CHANGELOG.md)
- [Commits](yargs/y18n@v4.0.0...y18n-v4.0.3)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

yarn.lock

@@ -5388,11 +5388,11 @@ graceful-fs@^4.2.4:
     "@babel/preset-env" "7.13.10"
     "@babel/preset-typescript" "7.13.0"
     create-react-class "15.7.0"
-    eslint-config-graylog "file:../../../.cache/yarn/v6/npm-graylog-web-plugin-4.1.0-SNAPSHOT-e0d5cee0-837f-409d-84e5-9a3bafc8c70c-1623844889475/node_modules/eslint-config-graylog"
+    eslint-config-graylog "file:../graylog2-server/graylog2-web-interface/packages/eslint-config-graylog"
     formik "2.2.6"
     html-webpack-plugin "^4.2.0"
     javascript-natural-sort "0.7.1"
-    jest-preset-graylog "file:../../../.cache/yarn/v6/npm-graylog-web-plugin-4.1.0-SNAPSHOT-e0d5cee0-837f-409d-84e5-9a3bafc8c70c-1623844889475/node_modules/jest-preset-graylog"
+    jest-preset-graylog "file:../graylog2-server/graylog2-web-interface/packages/jest-preset-graylog"
     jquery "3.5.1"
     moment "2.29.1"
     moment-timezone "0.5.31"
@@ -5406,7 +5406,7 @@ graceful-fs@^4.2.4:
     react-router-dom "5.2.0"
     reflux "0.2.13"
     styled-components "5.2.3"
-    stylelint-config-graylog "file:../../../.cache/yarn/v6/npm-graylog-web-plugin-4.1.0-SNAPSHOT-e0d5cee0-837f-409d-84e5-9a3bafc8c70c-1623844889475/node_modules/stylelint-config-graylog"
+    stylelint-config-graylog "file:../graylog2-server/graylog2-web-interface/packages/stylelint-config-graylog"
     typescript "4.2.3"
     webpack "4.44.2"
     webpack-cleanup-plugin "0.5.1"
@@ -11189,9 +11189,9 @@ xtend@^4.0.0, xtend@~4.0.1:
   integrity sha1-pcbVMr5lbiPbgg77lDofBJmNY68=
 
 y18n@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.0.tgz#95ef94f85ecc81d007c264e190a120f0a3c8566b"
-  integrity sha512-r9S/ZyXu/Xu9q1tYlpsLIsa3EeLXXk0VwlxqTcFRfg9EhMW+17kbt9G0NrgCmhGb5vT2hyhJZLfDGx+7+5Uj/w==
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/y18n/-/y18n-4.0.3.tgz#b5f259c82cd6e336921efd7bfd8bf560de9eeedf"
+  integrity sha512-JKhqTOwSrqNA1NY5lSztJ1GrBiUodLMmIZuLiDaMRJ+itFd+ABVE8XBjOvIWL+rSqNDC74LCSFmlb/U4UZ4hJQ==
 
 yallist@^3.0.2:
   version "3.0.2"