Remove v2.x.x branch support as it reaches OES (#1020)

* Remove references in docs docs
* Removed from CI
* Remove docs publication
* Extra: updated site v3-migration-guide to mention Java 11 requirement

.github/dependabot.yml

@@ -27,29 +27,3 @@ updates:
         update-types:
           - "version-update:semver-major"
           - "version-update:semver-minor"
-  - package-ecosystem: "maven"
-    directory: "/"
-    schedule:
-      interval: "weekly"
-    labels:
-      - "dependencies"
-    commit-message:
-      prefix: "(v2.2.x)"
-    target-branch: "v2.2.x"
-    ignore:
-      - dependency-name: org.apache.maven:*
-      - dependency-name: org.apache.maven.plugin-tools:*
-      - dependency-name: org.apache.maven.doxia:*
-      - dependency-name: org.codehaus.plexus:*
-      - dependency-name: commons-io:commons-io
-      - dependency-name: org.mockito:mockito-core
-        update-types:
-          - "version-update:semver-major"
-      - dependency-name: org.glassfish.jaxb:jaxb-runtime
-        update-types:
-          - "version-update:semver-major"
-          - "version-update:semver-minor"
-      - dependency-name: jakarta.xml.bind:jakarta.xml.bind-api
-        update-types:
-          - "version-update:semver-major"
-          - "version-update:semver-minor"

.github/workflows/build.yaml

@@ -3,14 +3,12 @@ on:
   push:
     branches:
       - main
-      - 2.2.x
     paths-ignore:
       - '*.adoc'
       - docs/**
   pull_request:
     branches:
       - main
-      - 2.2.x
     paths-ignore:
       - '*.adoc'
       - docs/**

.github/workflows/deploy-docs.yml

@@ -3,7 +3,6 @@ on:
   push:
     branches:
       - main
-      - v2.2.x
     paths: [ 'docs/**' ]
 permissions: read-all
 jobs:

README.adoc

@@ -141,9 +141,7 @@ You can find examples ready to copy-paste in the {uri-examples}[Asciidoctor Mave
 asciidoctor-maven-plugin comes in two versions with support for Maven 3.8.8+ and 3.9.x versions.
 
 * Version 3.x.x: current development branch.
-This is the recommended version, new features and fixes will be added as minor/patch releases.
-* Version 2.2.x: maintenance branch.
-Fixes will be released as patch versions up until 31st January 2025.
+New features and fixes will be added as minor/patch releases.
 
 == Contributing
 

docs/modules/plugin/pages/compatibility-matrix.adoc

@@ -23,8 +23,4 @@ Versions not listed below are not supported, please consider upgrading.
 |v2.x.x, v3.x.x
 |Yes
 
-|v2.2.x
-|v2.x.x
-|Yes (EOL Dec, 2015)
-
 |===

docs/modules/plugin/pages/v3-migration-guide.adoc

@@ -21,7 +21,6 @@ Users of the site module see xref:site-integration:v3-migration-guide.adoc[v3 mi
 
 Minimal Java version is 11.
 
-For anyone in need of a Java 8 compatible release, v2.5.x of the plugin will be supported for some time after v3.0.x release.
 Note this also imposes versions on dependencies, for example:
 
 * Only AsciidoctorJ v2.5.x

docs/modules/site-integration/pages/v3-migration-guide.adoc

@@ -18,6 +18,15 @@ The old Doxia module embedded in `asciidocto-maven-plugin` library it's now an i
 
 == Changes
 
+=== Minimal Java version
+
+Minimal Java version is 11.
+
+Note this also imposes versions on dependencies, for example:
+
+* Only AsciidoctorJ v2.5.x
+* Only asciidoctorj-diagram previous v2.2.8
+
 === Site plugin module renamed
 
 The https://maven.apache.org/doxia/[Doxia] module has been extracted into a separated subproject named `{doxia-compatible-module-name}`.