Bump flat from 5.0.2 to 6.0.1 in /js (#23373)

Bumps [flat](https://github.com/hughsk/flat) from 5.0.2 to 6.0.1.
- [Release notes](https://github.com/hughsk/flat/releases)
- [Commits](https://github.com/hughsk/flat/compare/5.0.2...v6.0.1)

---
updated-dependencies:
- dependency-name: flat
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

js/apps/admin-ui/package.json

@@ -71,7 +71,7 @@
     "dagre": "^0.8.5",
     "file-saver": "^2.0.5",
     "file-selector": "^0.6.0",
-    "flat": "^5.0.2",
+    "flat": "^6.0.1",
     "i18next": "^23.4.9",
     "i18next-http-backend": "^2.2.2",
     "keycloak-js": "workspace:*",

js/pnpm-lock.yaml

@@ -175,8 +175,8 @@ importers:
         specifier: ^0.6.0
         version: 0.6.0
       flat:
-        specifier: ^5.0.2
-        version: 5.0.2
+        specifier: ^6.0.1
+        version: 6.0.1
       i18next:
         specifier: ^23.4.9
         version: 23.4.9
@@ -3897,6 +3897,13 @@ packages:
   /flat@5.0.2:
     resolution: {integrity: sha512-b6suED+5/3rTpUBdG1gupIl8MPFCAMA0QXwmljLhvCUKcUvdE4gWky9zpuGCcXHOsz4J9wPGNWq6OKpmIzz3hQ==}
     hasBin: true
+    dev: true
+
+  /flat@6.0.1:
+    resolution: {integrity: sha512-/3FfIa8mbrg3xE7+wAhWeV+bd7L2Mof+xtZb5dRDKZ+wDvYJK4WDYeIOuOhre5Yv5aQObZrlbRmk3RTSiuQBtw==}
+    engines: {node: '>=18'}
+    hasBin: true
+    dev: false
 
   /flatted@3.2.7:
     resolution: {integrity: sha512-5nqDSxl8nn5BSNxyR3n4I6eDmbolI6WT+QqR547RwxQapgjQBmtktdP+HTBb/a/zLsbzERTONyUB5pefh5TtjQ==}
@@ -7251,7 +7258,7 @@ packages:
       dagre: 0.8.5
       file-saver: 2.0.5
       file-selector: 0.6.0
-      flat: 5.0.2
+      flat: 6.0.1
       i18next: 23.4.9
       i18next-http-backend: 2.2.2
       keycloak-js: link:libs/keycloak-js