Update java/ql/src/Security/CWE/CWE-023/PartialPathTraversalFromRemote.ql

Co-authored-by: Chris Smowton <smowton@github.com>

Author: smehta23

java/ql/src/Security/CWE/CWE-023/PartialPathTraversalFromRemote.ql

@@ -4,7 +4,7 @@
  * @kind path-problem
  * @problem.severity error
  * @security-severity 9.3
- * @precision high
+ * @precision medium
  * @id java/partial-path-traversal-from-remote
  * @tags security
  *       external/cwe/cwe-023