Fix/update CI

Some of the software installed on DAS-6 has changed, requiring the scripts that load environment modules for the tests on DAS-6 to change accordingly.

In the process, some dependencies have been updated to more recent versions. Since the CI on Docker was still using Ubuntu 20.04, it has been updated to use Ubuntu 22.04. A number of issues were identified in the process and fixed along the way.

At the moment, tSinglePointSource and tGridDegrid do not seem to work with the latest version of WSClean (v3.4) due to conflicts with polarizations and/or stokes counts. Fixing this is beyond the scope of this MR and indstead, slightly outdated versions of software are used: WSClean v3.3, DP3 v5.4 and Everbeam v0.4.0.

docker/ubuntu_22_04_integration

@@ -3,7 +3,7 @@ FROM ubuntu:22.04
 # Use specific versions of aoflagger and everybeam. When changing the version,
 # this docker file changes and CI will update the docker image.
 ENV AOFLAGGER_VERSION_TAG v3.4.0
-ENV EVERYBEAM_VERSION_TAG v0.5.3
+ENV EVERYBEAM_VERSION_TAG v0.4.0
 RUN export DEBIAN_FRONTEND="noninteractive" && \
 	apt-get update && \
     apt-get install -y \