Merge pull request #3 from io7m-com/dependabot/maven/develop/software…

….amazon.awssdk-bom-2.27.21

Bump software.amazon.awssdk:bom from 2.27.19 to 2.27.21

pom.xml

@@ -100,7 +100,7 @@
       <dependency>
         <groupId>software.amazon.awssdk</groupId>
         <artifactId>bom</artifactId>
-        <version>2.27.19</version>
+        <version>2.27.21</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>