upgrade document-store version (#118)

Author: sanket-mundra

gradle/libs.versions.toml

@@ -1,3 +1,3 @@
 [libraries]
 lombok = { module = "org.projectlombok:lombok", version = "1.18.30" }
-hypertrace-documentStore = { module = "org.hypertrace.core.documentstore:document-store", version = "0.7.65" }
+hypertrace-documentStore = { module = "org.hypertrace.core.documentstore:document-store", version = "0.9.1" }