deps: update dependency org.graalvm.sdk:graal-sdk to v22.2.0 (#1953)

Author: renovate-bot

google-cloud-spanner/pom.xml

@@ -16,7 +16,7 @@
   <properties>
     <site.installationModule>google-cloud-spanner</site.installationModule>
     <opencensus.version>0.31.1</opencensus.version>
-    <graalvm.version>22.1.0.1</graalvm.version>
+    <graalvm.version>22.2.0</graalvm.version>
     <spanner.testenv.config.class>com.google.cloud.spanner.GceTestEnvConfig</spanner.testenv.config.class>
     <spanner.testenv.instance>projects/gcloud-devel/instances/spanner-testing-east1</spanner.testenv.instance>
     <spanner.gce.config.project_id>gcloud-devel</spanner.gce.config.project_id>