fix(deps): update luigi to ^2.26.0

Author: renovate[bot]

frontend/package-lock.json

@@ -29,9 +29,9 @@
     "@angular/platform-browser": "^20.0.0",
     "@angular/platform-browser-dynamic": "^20.0.0",
     "@angular/router": "^20.0.0",
-    "@luigi-project/client": "^2.25.1",
-    "@luigi-project/core": "^2.25.1",
-    "@luigi-project/plugin-auth-oauth2": "^2.25.1",
+    "@luigi-project/client": "^2.26.0",
+    "@luigi-project/core": "^2.26.0",
+    "@luigi-project/plugin-auth-oauth2": "^2.26.0",
     "@openmfp/portal-ui-lib": "^0.186.12",
     "@ui5/webcomponents-ngx": "^0.5.10",
     "jmespath": "^0.16.0",