Update base directory path

Update base directory path with normalized base directory path

components/apimgt/org.wso2.carbon.apimgt.rest.api.publisher.v1/src/main/java/org/wso2/carbon/apimgt/rest/api/publisher/v1/utils/RestApiPublisherUtils.java

@@ -449,7 +449,7 @@ private static Path resolveFilePath(final String baseDirPathString,
          * If the resolved path does not start with the base directory path,
          * it indicates an attempt to escape the intended directory structure.
          */
-        if (!resolvedPath.startsWith(baseDirPath)) {
+        if (!resolvedPath.startsWith(baseDirPath.normalize())) {
             throw new APIManagementException("Error resolving path. The user path attempts" +
                     " to escape the base directory.");
         }