Harmonize java.mail dependency management

Closes gh-4588

Author: snicoll

spring-boot-starters/spring-boot-starter-remote-shell/pom.xml

@@ -105,6 +105,10 @@
 					<groupId>org.codehaus.groovy</groupId>
 					<artifactId>groovy-all</artifactId>
 				</exclusion>
+				<exclusion>
+					<groupId>javax.mail</groupId>
+					<artifactId>mail</artifactId>
+				</exclusion>
 			</exclusions>
 		</dependency>
 		<dependency>
@@ -121,5 +125,9 @@
 			<groupId>org.codehaus.groovy</groupId>
 			<artifactId>groovy</artifactId>
 		</dependency>
+		<dependency>
+			<groupId>com.sun.mail</groupId>
+			<artifactId>javax.mail</artifactId>
+		</dependency>
 	</dependencies>
 </project>