Bump specVersion to 7

Author: patrick96

ci.jsonnet

@@ -50,7 +50,7 @@ local libgraal(builds, include=true) = [b for b in builds if (std.findSubstr("li
   assert std.length(std.toString(import 'ci/ci_common/common.jsonnet')) > 0,
   ci_resources:: (import 'ci/ci_common/ci-resources.libsonnet'),
   overlay: graal_common.ci.overlay,
-  specVersion: "4",
+  specVersion: "7",
   tierConfig: {
     tier1: "gate",
     tier2: "gate",