Fix Spring Boot and Spring Security versions in documentation

spring-credhub-docs/build.gradle

@@ -71,6 +71,7 @@ asciidoctor {
 			docinfo: 'shared',
 			revnumber: project.version,
 			'spring-version': "${springVersion}",
+			'spring-boot-version': "${springBootVersion}",
 			'spring-security-version': "${springSecurityVersion}",
 			'branch-or-tag': project.version.endsWith('SNAPSHOT') ? 'main' : "v${project.version}",
 			sectanchors: '',

spring-credhub-docs/src/docs/asciidoc/boot-configuration.adoc

@@ -2,7 +2,6 @@
 :credhub-api-mtls: {credhub-api-home}version/main/#_mutual_tls
 :credhub-api-oauth: {credhub-api-home}version/main/#_uaa_oauth2
 :spring-boot-oauth: https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-security-oauth2
-:spring-security-version: 5.5.2
 :spring-security-apidocs-home: https://docs.spring.io/spring-security/site/docs/{spring-security-version}/api/org/springframework/security/oauth2/client/
 :spring-security-ref-home: https://docs.spring.io/spring-security/site/docs/{spring-security-version}/reference/html5/
 

spring-credhub-docs/src/docs/asciidoc/getting-started.adoc

@@ -34,7 +34,7 @@ To enable reactive support in Spring CredHub, add the following {spring-webflux}
         <dependency>
             <groupId>org.springframework.boot</groupId>
             <artifactId>spring-boot-starter-webflux</artifactId>
-            <version>{spring-version}</version>
+            <version>{spring-boot-version}</version>
         </dependency>
     </dependencies>
 ----
@@ -76,7 +76,7 @@ To enable reactive support in Spring CredHub, add the following {spring-webflux}
 [subs="verbatim,attributes"]
 ----
     dependencies {
-        compile("org.springframework.boot:spring-boot-starter-webflux:{spring-version}")
+        compile("org.springframework.boot:spring-boot-starter-webflux:{spring-boot-version}")
     }
 ----