fix: singer/pom.xml to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JAVA-IONETTY-8367012

singer/pom.xml

@@ -5,7 +5,7 @@
     <description>Logging Agent</description>
     <inceptionYear>2013</inceptionYear>
     <properties>
-        <netty.version>4.1.75.Final</netty.version>
+        <netty.version>4.1.115.Final</netty.version>
     </properties>
     <parent>
         <groupId>com.pinterest.singer</groupId>
@@ -224,7 +224,7 @@
         <dependency>
             <groupId>software.amazon.awssdk</groupId>
             <artifactId>s3</artifactId>
-            <version>2.17.273</version>
+            <version>2.29.11</version>
         </dependency>
 		<dependency>
 			<groupId>io.dropwizard.metrics</groupId>