[build] Install asciidoctor-pdf before deploying

Signed-off-by: Dariusz Jędrzejczyk <dariusz.jedrzejczyk@broadcom.com>

Author: chemicL

.github/workflows/publish.yml

@@ -74,6 +74,12 @@ jobs:
     environment: snapshots
     steps:
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4
+    - name: Set up Ruby for asciidoctor-pdf
+      uses: ruby/setup-ruby@cacc9f1c0b3f4eb8a16a6bb0ed10897b43b9de49 # v1
+      with:
+        ruby-version: 3.3.0
+    - name: Install asciidoctor-pdf / rouge
+      run: gem install asciidoctor-pdf rouge
     - name: Setup JDK 8
       uses: actions/setup-java@3a4f6e1af504cf6a31855fa899c6aa5355ba6c12 # tag=v3
       with:
@@ -107,6 +113,12 @@ jobs:
     environment: releases
     steps:
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # tag=v4
+    - name: Set up Ruby for asciidoctor-pdf
+      uses: ruby/setup-ruby@cacc9f1c0b3f4eb8a16a6bb0ed10897b43b9de49 # v1
+      with:
+        ruby-version: 3.3.0
+    - name: Install asciidoctor-pdf / rouge
+      run: gem install asciidoctor-pdf rouge
     - name: Setup JDK 8
       uses: actions/setup-java@3a4f6e1af504cf6a31855fa899c6aa5355ba6c12 # tag=v3
       with:
@@ -142,6 +154,12 @@ jobs:
     environment: releases
     steps:
     - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # tag=v4
+    - name: Set up Ruby for asciidoctor-pdf
+      uses: ruby/setup-ruby@cacc9f1c0b3f4eb8a16a6bb0ed10897b43b9de49 # v1
+      with:
+        ruby-version: 3.3.0
+    - name: Install asciidoctor-pdf / rouge
+      run: gem install asciidoctor-pdf rouge
     - name: Setup JDK 8
       uses: actions/setup-java@3a4f6e1af504cf6a31855fa899c6aa5355ba6c12 # tag=v3
       with: