Add dep mgmt for fast-classpath-scanner while Neo4j uses LATEST

neo4j-ogm-core uses LATEST for the version of its dependency upon
fast-classpath-scanner. This leads to unrepeatable builds and also
appears to be destabilising our CI.

Hopefull we will be able to revert this commit once
neo4j/neo4j-ogm#341 has been fixed.

See gh-8687

spring-boot-dependencies/pom.xml

@@ -74,6 +74,7 @@
 		<ehcache.version>2.10.3</ehcache.version>
 		<ehcache3.version>3.2.1</ehcache3.version>
 		<embedded-mongo.version>1.50.5</embedded-mongo.version>
+		<fast-classpath-scanner.version>2.0.17</fast-classpath-scanner.version>
 		<flyway.version>4.0.3</flyway.version>
 		<freemarker.version>2.3.25-incubating</freemarker.version>
 		<elasticsearch.version>2.4.4</elasticsearch.version>
@@ -826,6 +827,11 @@
 				<artifactId>metrics-servlets</artifactId>
 				<version>${dropwizard-metrics.version}</version>
 			</dependency>
+			<dependency>
+				<groupId>io.github.lukehutch</groupId>
+				<artifactId>fast-classpath-scanner</artifactId>
+				<version>${fast-classpath-scanner.version}</version>
+			</dependency>
 			<dependency>
 				<groupId>io.netty</groupId>
 				<artifactId>netty-all</artifactId>