fix: use @nrfcloud/problem-detail@1.4.4

1.4.4 is the current release. The previous pin, 1.4.3, was the latest at the
time the dependency was switched from JSR to NPM, and was superseded before that
change was released.

Author: coderbyheart

package-lock.json

@@ -69,7 +69,7 @@
     "@aws-lambda-powertools/metrics": "2.34.0",
     "@middy/core": "7.7.2",
     "@middy/input-output-logger": "7.7.2",
-    "@nrfcloud/problem-detail": "1.4.3",
+    "@nrfcloud/problem-detail": "1.4.4",
     "@sinclair/typebox": "0.34.52"
   }
 }