Update github actions

Author: mgoellnitz

.github/workflows/gradle.yml

@@ -32,7 +32,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Check and Set Release Version
         run: |
@@ -51,21 +51,21 @@ jobs:
         run: unzip -q build/distributions/*.zip
 
       - name: Archive Package
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: JFileSync3-${{ github.ref_name }}
           path: JFileSync3/*
           retention-days: 5
 
       - name: Archive Debian Package
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: JFileSync3-${{ github.ref_name }}-Debian
           path: build/distributions/*.deb
           retention-days: 50
 
       - name: Archive RPM Package
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: JFileSync3-${{ github.ref_name }}-RPM
           path: build/distributions/*.rpm