Bump spark-core from 2.5 to 2.7.2

Bumps [spark-core](https://github.com/perwendel/spark) from 2.5 to 2.7.2.
- [Release notes](https://github.com/perwendel/spark/releases)
- [Commits](perwendel/spark@2.5...2.7.2)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -46,7 +46,7 @@
 		<dependency>
 			<groupId>com.sparkjava</groupId>
 			<artifactId>spark-core</artifactId>
-			<version>2.5</version>
+			<version>2.7.2</version>
 		</dependency>
 
 		<dependency>