#2364: use Ubuntu 22.04 in documentation build

Author: cz4rs

.github/workflows/build-docs.yml

@@ -4,7 +4,7 @@ on:
   push:
     branches:
       - develop
-
+      - 2364-fix-documentation-build
 jobs:
 
   build:
@@ -14,10 +14,10 @@ jobs:
     env:
       REPO: lifflander1/vt
       ARCH: amd64
-      UBUNTU: 18.04
+      UBUNTU: 22.04
       COMPILER_TYPE: gnu
-      COMPILER: gcc-8
-      HOST_COMPILER: gcc-8
+      COMPILER: gcc-11
+      HOST_COMPILER: gcc-11
       BUILD_TYPE: release
       ULIMIT_CORE: 0
       VT_LB: 1