Use ResolvedBom for javadoc links

[wilkinsona]

There's some logic in spring-boot-docs for figuring out the javadoc links for various projects:

spring-boot/spring-boot-project/spring-boot-docs/build.gradle

Lines 225 to 242 in 95b882c

	doFirst {
	def versionConstraints = dependencyVersions.versionConstraints
	def toMajorMinorVersion = version -> {
	String formatted = version.split("\\.").take(2).join('.') + '.x'
	return version.endsWith("-SNAPSHOT") ? formatted + "-SNAPSHOT" : formatted
	}
	def springFrameworkVersion = toMajorMinorVersion(versionConstraints["org.springframework:spring-core"])
	def springSecurityVersion = toMajorMinorVersion(versionConstraints["org.springframework.security:spring-security-core"])
	def tomcatVersion = "${versionConstraints["org.apache.tomcat:tomcat-annotations-api"]}"
	def tomcatDocsVersion = tomcatVersion.substring(0, tomcatVersion.lastIndexOf("."));
	options.links = [
	"https://docs.oracle.com/en/java/javase/17/docs/api/",
	"https://docs.spring.io/spring-framework/docs/${springFrameworkVersion}/javadoc-api/",
	"https://docs.spring.io/spring-security/site/docs/${springSecurityVersion}/api/",
	"https://jakarta.ee/specifications/platform/9/apidocs/",
	"https://tomcat.apache.org/tomcat-${tomcatDocsVersion}-doc/api/",
	] as String[]
	}

This similar information already in spring-boot-dependencies, for example:

spring-boot/spring-boot-project/spring-boot-dependencies/build.gradle

Lines 2425 to 2426 in 95b882c

	javadoc(version -> "https://docs.spring.io/spring-security/site/docs/%s/api"
	.formatted(version.forMajorMinorGeneration()), "org.springframework.security")

To avoid this duplication, we should make the links available in the ResolvedBom and then use them in spring-boot-docs.