Polish actuator dependencies and test resources

This commit removes references of cache infra following the move to
Micrometer. We no longer ships an infinispan specific binder so the
dependency has been removed as well.

Closes gh-19838

Author: snicoll

spring-boot-project/spring-boot-actuator-autoconfigure/pom.xml

@@ -309,11 +309,6 @@
 			<artifactId>jolokia-core</artifactId>
 			<optional>true</optional>
 		</dependency>
-		<dependency>
-			<groupId>org.infinispan</groupId>
-			<artifactId>infinispan-spring4-embedded</artifactId>
-			<optional>true</optional>
-		</dependency>
 		<dependency>
 			<groupId>org.liquibase</groupId>
 			<artifactId>liquibase-core</artifactId>

spring-boot-project/spring-boot-actuator-autoconfigure/src/test/resources/cache/test-ehcache.xml

@@ -32,6 +32,11 @@
 			<artifactId>jackson-databind</artifactId>
 			<optional>true</optional>
 		</dependency>
+		<dependency>
+			<groupId>com.github.ben-manes.caffeine</groupId>
+			<artifactId>caffeine</artifactId>
+			<optional>true</optional>
+		</dependency>
 		<dependency>
 			<groupId>com.hazelcast</groupId>
 			<artifactId>hazelcast</artifactId>