Bump Pulsar version to 3.1.1 (#144)

diff --git a/gradle/libs.versions.toml b/gradle/libs.versions.toml
index ac44663..cf4268b 100644
--- a/gradle/libs.versions.toml
+++ b/gradle/libs.versions.toml
@@ -17,7 +17,7 @@
 # under the License.
 #
 [versions]
-pulsar = "3.1.0"
+pulsar = "3.1.1"
 junit-jupiter = "5.8.2"
 log4j = "2.18.0"
 slf4j = "1.7.36"
diff --git a/pulsar-client-reactive-adapter/src/intTest/java/org/apache/pulsar/reactive/client/adapter/SingletonPulsarContainer.java b/pulsar-client-reactive-adapter/src/intTest/java/org/apache/pulsar/reactive/client/adapter/SingletonPulsarContainer.java
index fe79e13..868e06b 100644
--- a/pulsar-client-reactive-adapter/src/intTest/java/org/apache/pulsar/reactive/client/adapter/SingletonPulsarContainer.java
+++ b/pulsar-client-reactive-adapter/src/intTest/java/org/apache/pulsar/reactive/client/adapter/SingletonPulsarContainer.java
@@ -44,7 +44,7 @@
 	}
 
 	static DockerImageName getPulsarImage() {
-		return DockerImageName.parse("apachepulsar/pulsar:3.1.0");
+		return DockerImageName.parse("apachepulsar/pulsar:3.1.1");
 	}
 
 }