Update to 3.2.2 in CI

Author: eregon

ci/common.jsonnet

@@ -111,7 +111,7 @@ local common_json = import "../common.json";
 
     truffleruby:: {
       packages+: (if self.os == "linux" && self.arch == "amd64" then {
-        ruby: "==3.1.2", # Newer version, also used for benchmarking
+        ruby: "==3.2.2", # Newer version, also used for benchmarking
       } else {
         ruby: "==3.0.2",
       }) + (if self.os == "linux" then {