Upgrade Ubuntu build to 22.04

.appveyor.yml

@@ -20,17 +20,17 @@ environment:
     #                          -DBUILD_SERVER=OFF \
     #                          -DCMAKE_PREFIX_PATH=C:\\Qt\\5.15.2\\msvc2019_64;C:\\Libraries\\boost_1_73_0"
     #   CMAKE_GENERATOR: Ninja
-    - TARGET: ubuntu2004prod
+    - TARGET: ubuntu2204prod
       APPVEYOR_BUILD_WORKER_CLOUD: nasrock Docker
       APPVEYOR_BUILD_WORKER_IMAGE: Linux
-      CC:  "gcc-9"
-      CXX: "g++-9"
+      CC:  "gcc-11"
+      CXX: "g++-11"
       CMAKE_CUSTOM_OPTIONS: "-DCMAKE_BUILD_TYPE=Release \
                              -DARCH_OPT=nehalem \
                              -DDEBUG_OUTPUT=ON \
                              -DENABLE_EXTERNAL_LIBRARIES=ON \
                              -DBUILD_SERVER=OFF"
-    - TARGET: ubuntu2004docker
+    - TARGET: ubuntu2204docker
       APPVEYOR_BUILD_WORKER_CLOUD: nasrock
       APPVEYOR_BUILD_WORKER_IMAGE: Linux
       APPVEYOR_CONSOLE_DISABLE_PTY: true
@@ -68,7 +68,7 @@ for:
   #       branch: master            # release from master branch only
   - matrix:
       only:
-        - TARGET: ubuntu2004prod
+        - TARGET: ubuntu2204prod
     clone_folder: /home/appveyor/projects
     cache:
       - $HOME/external/
@@ -90,7 +90,7 @@ for:
             libopus-dev libcodec2-dev libairspy-dev libhackrf-dev \
             libbladerf-dev libsoapysdr-dev libiio-dev libuhd-dev \
             python3-mako python3-cheetah python3-numpy \
-            autoconf automake libtool ninja-build libclang1-9
+            autoconf automake libtool ninja-build libclang1-11
       - sh: if [[ ! "${CMAKE_CUSTOM_OPTIONS}" =~ "ENABLE_EXTERNAL_LIBRARIES=ON" ]]; then bash cmake/ci/build_cm256cc.sh; fi
       - sh: if [[ ! "${CMAKE_CUSTOM_OPTIONS}" =~ "ENABLE_EXTERNAL_LIBRARIES=ON" ]]; then bash cmake/ci/build_mbelib.sh; fi
       - sh: if [[ ! "${CMAKE_CUSTOM_OPTIONS}" =~ "ENABLE_EXTERNAL_LIBRARIES=ON" ]]; then bash cmake/ci/build_serialdv.sh; fi
@@ -128,7 +128,7 @@ for:
         branch: master                 # release from master branch only
   - matrix:
       only:
-        - TARGET: ubuntu2004docker
+        - TARGET: ubuntu2204docker
     before_build:
       - git clone https://github.com/f4exb/sdrangel-docker.git
       - cd sdrangel-docker