Upgrade Spring Doc Resources and switch to light theme

See gh-18293

spring-boot-project/spring-boot-docs/pom.xml

@@ -1193,7 +1193,7 @@
 									<goal>wget</goal>
 								</goals>
 								<configuration>
-									<url>https://repo.spring.io/release/io/spring/docresources/spring-doc-resources/${spring-doc-resources.version}/spring-doc-resources-${spring-doc-resources.version}.zip</url>
+									<url>https://repo.spring.io/snapshot/io/spring/docresources/spring-doc-resources/${spring-doc-resources.version}/spring-doc-resources-${spring-doc-resources.version}.zip</url>
 									<unpack>true</unpack>
 									<outputDirectory>${refdocs.build.directory}</outputDirectory>
 								</configuration>
@@ -1541,7 +1541,7 @@
 									<doctype>book</doctype>
 									<attributes>
 										<highlightjsdir>js/highlight</highlightjsdir>
-										<highlightjs-theme>atom-one-dark-reasonable</highlightjs-theme>
+										<highlightjs-theme>github</highlightjs-theme>
 										<linkcss>true</linkcss>
 										<imagesdir>./images</imagesdir>
 										<icons>font</icons>

spring-boot-project/spring-boot-parent/pom.xml

@@ -28,7 +28,7 @@
 		<spock.version>1.0-groovy-2.4</spock.version>
 		<testcontainers.version>1.12.0</testcontainers.version>
 		<testng.version>6.14.3</testng.version>
-		<spring-doc-resources.version>0.1.2.RELEASE</spring-doc-resources.version>
+		<spring-doc-resources.version>0.1.3.BUILD-SNAPSHOT</spring-doc-resources.version>
 	</properties>
 	<scm>
 		<url>https://github.com/spring-projects/spring-boot</url>