Updated dependencies to align with Spring Boot 2.7.3

Author: SimonTaylor

pom.xml

@@ -37,7 +37,7 @@
         <maven.compiler.release>8</maven.compiler.release>
 
         <!-- Dependency versions -->
-        <spring-boot.version>2.7.2</spring-boot.version>
+        <spring-boot.version>2.7.3</spring-boot.version>
         <spt-cid.version>2.0.11</spt-cid.version>
         <spt-logging-spring.version>2.0.6</spt-logging-spring.version>