Fix tests

.github/workflows/tests.yml

@@ -1,4 +1,4 @@
-name: Build (Java 17)
+name: Build
 run-name: "Build, tests and package"
 
 on:
@@ -27,4 +27,25 @@ jobs:
 
       # Build all modules except klass-forvaltning since it is not compatible with JDK 17
       - name: Build, test and package with Maven
-        run: mvn --batch-mode --update-snapshots package -pl '!:klass-forvaltning' -P nexus
+        run: mvn --batch-mode --update-snapshots package -pl '!:klass-forvaltning' -P nexus
+
+      - uses: actions/checkout@v3
+      - name: Set up JDK 1.8
+        uses: actions/setup-java@v3
+        with:
+          distribution: 'zulu'
+          java-version: '8'
+          cache: maven
+
+      # Need to downgrade Maven in order to allow HTTP (not HTTPS) packages to be downloaded.
+      # This is necessary as HTTP repositories were blocked in Maven 3.8.1
+      # HTTP repositories are used in some outdated dependenciesns
+      # This step can be removed once KLASS packages have been updated to more recent versions
+      - name: Set up Maven
+        uses: stCarolas/[email protected]
+        with:
+          maven-version: 3.6.3
+
+      # Build only klass-forvaltning with JDK 1.8
+      - name: Build, test and package with Maven
+        run: mvn --batch-mode --update-snapshots package -pl :klass-forvaltning -P nexus