TIKA-4695: update apache parent

Author: THausherr

tika-parent/pom.xml

@@ -25,7 +25,7 @@
   <parent>
     <groupId>org.apache</groupId>
     <artifactId>apache</artifactId>
-    <version>37</version>
+    <version>38</version>
     <relativePath />
   </parent>