Merge pull request getodk#6355 from seadowg/path-error-message

Add message to PathUtils exception

shared/src/main/java/org/odk/collect/shared/PathUtils.kt

@@ -16,7 +16,7 @@ object PathUtils {
         if (File(absolutePath).canonicalPath.startsWith(dirPath)) {
             return absolutePath
         } else {
-            throw SecurityException()
+            throw SecurityException("Invalid path: $absolutePath")
         }
     }