Update build toolchain

[basil]

CC @tszmytka @dblock

[dblock]

On my local mac I now get this (after this change):

mvn test

[INFO] --- maven-enforcer-plugin:3.1.0:enforce (display-info) @ ansicolor ---
[WARNING] Missing:
----------
1) org.jenkins-ci.plugins.workflow:workflow-step-api:jar:622.vb_8e7c15b_c95a_

  Try downloading the file manually from the project website.

  Then, install it using the command: 
      mvn install:install-file -DgroupId=org.jenkins-ci.plugins.workflow -DartifactId=workflow-step-api -Dversion=622.vb_8e7c15b_c95a_ -Dpackaging=jar -Dfile=/path/to/file

  Alternatively, if you host your own repository you can deploy the file there: 
      mvn deploy:deploy-file -DgroupId=org.jenkins-ci.plugins.workflow -DartifactId=workflow-step-api -Dversion=622.vb_8e7c15b_c95a_ -Dpackaging=jar -Dfile=/path/to/file -Durl=[url] -DrepositoryId=[id]

  Path to dependency: 
  	1) org.jenkins-ci.plugins.workflow:workflow-step-api:jar:622.vb_8e7c15b_c95a_

Downgrading back to 4.40 I am seeing this:

[WARNING] Rule 1: org.apache.maven.plugins.enforcer.RequireMavenVersion failed with message:
3.8.1 required to no longer download dependencies via HTTP (use HTTPS instead).
[INFO] ------------------------------------------------------------------------

This seems to have some workarounds (https://stackoverflow.com/questions/45337558/failed-to-execute-goal-org-apache-maven-pluginsmaven-enforcer-plugin) but I would rather fix it - can't find how.

[basil]

On my local mac I now get this (after this change)

That is mojohaus/extra-enforcer-rules#226 which was introduced in extra-enforcer-rules 1.6.0 (adopted in plugin-pom 4.43) and fixed in extra-enforcer-rules 1.6.1 (adopted in the forthcoming plugin-pom 4.44).

The warning is just log spam and does not have any impact on development or production.

I would rather fix it - can't find how.

The message tells you how: use Maven 3.8.1 or higher.

[dblock]

On my local mac I now get this (after this change)

That is mojohaus/extra-enforcer-rules#226 which was introduced in extra-enforcer-rules 1.6.0 (adopted in plugin-pom 4.43) and fixed in extra-enforcer-rules 1.6.1 (adopted in the forthcoming plugin-pom 4.44).

The warning is just log spam and does not have any impact on development or production.

I would rather fix it - can't find how.

The message tells you how: use Maven 3.8.1 or higher.

Gah, that message was totally confusing, thx.