Increase jdbc-all-jar.maxsize after DRILL-8436 and 8420.

This branch does not increase the size of the JDBC driver but I believe that
the preceding commits mentioned arrived in master independently with the first
growing the JDBC driver jar and the second shrinking it and lowering the jar
size limit accordingly. Their respective PR CI runs both passed but the CI
runs on master, once it contained both commits, started failing on the jar size
enforcer.

exec/jdbc-all/pom.xml

@@ -33,7 +33,7 @@
        "package.namespace.prefix" equals to "oadd.". It can be overridden if necessary within any profile -->
   <properties>
     <package.namespace.prefix>oadd.</package.namespace.prefix>
-    <jdbc-all-jar.maxsize>40500000</jdbc-all-jar.maxsize>
+    <jdbc-all-jar.maxsize>44500000</jdbc-all-jar.maxsize>
   </properties>
 
   <dependencies>