remove java 8 support

Author: arnaudroques

.github/workflows/main.yml

@@ -42,58 +42,12 @@ jobs:
           name: war-jre11
           path: target/plantuml*-${{ steps.version.outputs.VERSION }}.war
 
-  build-jdk8:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-
-      - uses: actions/setup-java@v3
-        with:
-          distribution: "zulu"
-          java-version: 8
-          check-latest: true
-          cache: "maven"
-
-      - name: get tag name
-        id: version
-        run: echo "VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_OUTPUT
-
-      - name: Remove test code (not java 8 compatible)
-        run: rm -rf src/test
-
-      - name: build with maven
-        run: mvn --batch-mode -f pom.jdk8.xml --define java.net.useSystemProxies=true package
-
-      - name: create renamed build
-        run: cp target/plantuml.war target/plantuml-jre8-${{ steps.version.outputs.VERSION }}.war
-
-      - name: build with maven (including the apache-jsp artifact)
-        run: mvn --batch-mode -f pom.jdk8.xml --define java.net.useSystemProxies=true -Dapache-jsp.scope=compile package
-
-      - name: create renamed build (including the apache-jsp artifact)
-        run: cp target/plantuml.war target/plantuml-jre8-jsp-${{ steps.version.outputs.VERSION }}.war
-
-      - name: temporarily save generated war files
-        uses: actions/upload-artifact@v4
-        with:
-          name: war-jre8
-          path: target/plantuml*-${{ steps.version.outputs.VERSION }}.war
-
   publish-releases:
     runs-on: ubuntu-latest
     needs:
       - build-jdk11
-      - build-jdk8
     steps:
-      - name: retrieve generated war files (jre8)
-        uses: actions/download-artifact@v4.1.7
-        with:
-          name: war-jre8
-          path: artifacts
-
-      - name: retrieve generated war files (jre11)
+      - name: retrieve generated war files
         uses: actions/download-artifact@v4.1.7
         with:
           name: war-jre11

.github/workflows/tests.yml

@@ -5,36 +5,6 @@ on:
   - pull_request
 
 jobs:
-  test-java-8-war-generation:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-
-      - uses: actions/setup-java@v3
-        with:
-          distribution: "zulu"
-          java-version: 8
-          check-latest: true
-          cache: "maven"
-
-      - name: Remove test code (not java 8 compatible)
-        run: rm -rf src/test
-
-      - name: Generate war file (including apache-jsp artifact)
-        run: mvn --batch-mode -f pom.jdk8.xml -D java.net.useSystemProxies=true -Dapache-jsp.scope=compile clean package
-
-      - name: Generate war file
-        run: mvn --batch-mode -f pom.jdk8.xml -D java.net.useSystemProxies=true clean package
-
-      - name: temporarily save generated files
-        uses: actions/upload-artifact@v4
-        with:
-          name: war-jre8
-          path: target/plantuml.war
-          retention-days: 1
-
   test-mvn-livecycle:
     runs-on: ubuntu-latest
     strategy: