deps: update core dependencies to v1.93.6 (#74)

Author: renovate-bot

pom.xml

@@ -61,7 +61,7 @@
     <protobuf.version>3.12.2</protobuf.version>
     <google.api-common.version>1.9.2</google.api-common.version>
     <google.common-protos.version>1.18.0</google.common-protos.version>
-    <google.core.version>1.93.5</google.core.version>
+    <google.core.version>1.93.6</google.core.version>
     <google.auth.version>0.20.0</google.auth.version>
     <google.http-client.version>1.35.0</google.http-client.version>
     <google.api-client.version>1.30.9</google.api-client.version>