Replace JavadocStyleCheck with more focused javadoc checks

Replace `JavadocStyleCheck` with the more focused `SummaryJavadocCheck`
and `MissingJavadocPackageCheck` to ensure compatibility with
checkstyle 13.9.0+.

Fixes gh-479

Author: philwebb

spring-javaformat/spring-javaformat-checkstyle/src/main/resources/io/spring/javaformat/checkstyle/spring-checkstyle.xml

@@ -90,9 +90,9 @@
 		<module name="com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocVariableCheck">
 			<property name="{{javadocVariableCheckScopeProperty}}" value="public"/>
 		</module>
-		<module name="com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocStyleCheck">
-			<property name="checkEmptyJavadoc" value="true"/>
-		</module>
+		<module name="com.puppycrawl.tools.checkstyle.checks.javadoc.SummaryJavadocCheck" />
+		<module name="com.puppycrawl.tools.checkstyle.checks.javadoc.MissingJavadocPackageCheck" />
+
 		<module name="com.puppycrawl.tools.checkstyle.checks.javadoc.NonEmptyAtclauseDescriptionCheck" />
 		<module name="com.puppycrawl.tools.checkstyle.checks.javadoc.JavadocTagContinuationIndentationCheck">
 			<property name="offset" value="0"/>

spring-javaformat/spring-javaformat-checkstyle/src/test/java/io/spring/javaformat/checkstyle/SpringConfigurationLoaderTests.java

@@ -50,9 +50,9 @@ public void loadShouldLoadChecks() {
 		assertThat(checks).hasSize(5);
 		TreeWalker treeWalker = (TreeWalker) checks.toArray()[4];
 		Set<?> ordinaryChecks = (Set<?>) Extractors.byName("ordinaryChecks").extract(treeWalker);
-		assertThat(ordinaryChecks).hasSize(63);
+		assertThat(ordinaryChecks).hasSize(62);
 		Set<?> commentChecks = (Set<?>) Extractors.byName("commentChecks").extract(treeWalker);
-		assertThat(commentChecks).hasSize(6);
+		assertThat(commentChecks).hasSize(8);
 	}
 
 	@Test
@@ -64,9 +64,9 @@ public void loadWithExcludeShouldExcludeChecks() {
 		assertThat(checks).hasSize(5);
 		TreeWalker treeWalker = (TreeWalker) checks.toArray()[4];
 		Set<?> ordinaryChecks = (Set<?>) Extractors.byName("ordinaryChecks").extract(treeWalker);
-		assertThat(ordinaryChecks).hasSize(62);
+		assertThat(ordinaryChecks).hasSize(61);
 		Set<?> commentChecks = (Set<?>) Extractors.byName("commentChecks").extract(treeWalker);
-		assertThat(commentChecks).hasSize(5);
+		assertThat(commentChecks).hasSize(7);
 	}
 
 	@Test