GitHub Actions workflow upgrades (#3218)

* Upgrade actions to fix deprecation warnings
* Use ubuntu-22.04 for builds

Signed-off-by: Wouter Born <github@maindrain.net>

.github/workflows/ci-build.yml

@@ -20,7 +20,7 @@ jobs:
       matrix:
         java: [ '11', '17' ]
         maven: [ '3.8.6' ]
-        os: [ 'ubuntu-20.04' ]
+        os: [ 'ubuntu-22.04' ]
     name: Build (Java ${{ matrix.java }}, ${{ matrix.os }})
     runs-on: ${{ matrix.os }}
     steps:
@@ -51,7 +51,7 @@ jobs:
           java-version: ${{ matrix.java }}
 
       - name: Set up Maven ${{ matrix.maven }}
-        uses: stCarolas/setup-maven@v4.4
+        uses: stCarolas/setup-maven@v4.5
         with:
           maven-version: ${{ matrix.maven }}