[GR-48571] Update mx to compose unittest configs from dependencies.

Author: tzezula

common.json

@@ -4,7 +4,7 @@
     "Jsonnet files should not include this file directly but use ci/common.jsonnet instead."
   ],
 
-  "mx_version": "6.53.2",
+  "mx_version": "7.0.3",
 
   "COMMENT.jdks": "When adding or removing JDKs keep in sync with JDKs in ci/common.jsonnet",
   "jdks": {

truffle/mx.truffle/suite.py

@@ -39,7 +39,7 @@
 # SOFTWARE.
 #
 suite = {
-  "mxversion": "6.44.1",
+  "mxversion": "7.0.3",
   "name" : "truffle",
   "version" : "24.0.0",
   "release" : False,