Upgrade to aws-java-sdk-s3 1.11.18

Remove deprecated V4 configuration which is now default.

pom.xml

@@ -284,7 +284,7 @@
     <dependency>
       <groupId>com.amazonaws</groupId>
       <artifactId>aws-java-sdk-s3</artifactId>
-      <version>1.10.76</version>
+      <version>1.11.18</version>
       <scope>test</scope>
       <exclusions>
         <exclusion>

src/test/java/org/gaul/s3proxy/S3AwsSdkTest.java

@@ -80,9 +80,6 @@ public final class S3AwsSdkTest {
         System.setProperty(
                 SDKGlobalConfiguration.DISABLE_CERT_CHECKING_SYSTEM_PROPERTY,
                 "true");
-        System.setProperty(
-                SDKGlobalConfiguration.ENFORCE_S3_SIGV4_SYSTEM_PROPERTY,
-                "true");
         disableSslVerification();
     }