Update GitHub Actions for 4.4 (#662)

Co-authored-by: DITA-OT Bot <ditaotbot@gmail.com>
Signed-off-by: DITA-OT Bot <ditaotbot@gmail.com>

Author: jelovirt

.github/actions/render/action.yml

@@ -6,7 +6,7 @@ inputs:
     default: 'master'
   DITA_OT_VERSION:
     description: 'DITA-OT version used for rendering'
-    default: '4.3.5'
+    default: '4.4'
 runs:
   using: 'composite'
   steps:

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     env:
       WEBSITE_PLUGIN_BRANCH: 'master'
-      DITA_OT_VERSION: '4.3.5'
+      DITA_OT_VERSION: '4.4'
     steps:
       - name: Parse arguments
         run: |