Excavator: Upgrades Baseline to the latest version (#868)

Author: svc-excavator-bot

.baseline/checkstyle/checkstyle.xml

@@ -173,6 +173,7 @@
         </module>
         <module name="IllegalType"> <!-- Java Coding Guide: Limit coupling on concrete classes -->
             <property name="illegalClassNames" value="java.util.ArrayList, java.util.HashSet, java.util.HashMap, java.util.LinkedList, java.util.LinkedHashMap, java.util.LinkedHashSet, java.util.TreeSet, java.util.TreeMap, com.google.common.collect.ArrayListMultimap, com.google.common.collect.ForwardingListMultimap, com.google.common.collect.ForwardingMultimap, com.google.common.collect.ForwardingSetMultimap, com.google.common.collect.ForwardingSortedSetMultimap, com.google.common.collect.HashMultimap, com.google.common.collect.LinkedHashMultimap, com.google.common.collect.LinkedListMultimap, com.google.common.collect.TreeMultimap"/>
+            <message key="illegal.type" value="Usage of type ''{0}'' is not allowed to limit coupling on concrete classes. For example, prefer Multimap over HashMultimap, List over ArrayList, and Set over TreeSet."/>
         </module>
         <module name="IllegalType">
             <property name="id" value="BanGuavaCaches"/>

build.gradle

@@ -26,7 +26,7 @@ buildscript {
         classpath 'com.palantir.gradle.jdkslatest:gradle-jdks-latest:0.21.0'
         classpath 'com.palantir.gradle.externalpublish:gradle-external-publish-plugin:1.19.0'
         classpath 'com.palantir.gradle.failure-reports:gradle-failure-reports:1.14.0'
-        classpath 'com.palantir.baseline:gradle-baseline-java:6.47.0'
+        classpath 'com.palantir.baseline:gradle-baseline-java:6.48.0'
         classpath 'com.palantir.gradle.consistentversions:gradle-consistent-versions:2.36.0'
         classpath 'com.palantir.gradle.gitversion:gradle-git-version:4.0.0'
         classpath 'com.palantir.gradle.idea-configuration:gradle-idea-configuration:0.5.0'