chore: update workflow versions

Author: Goldenfield192

.github/workflows/build.yml

@@ -6,7 +6,7 @@ jobs:
     build:
         runs-on: ubuntu-latest
         steps:
-            - uses: actions/checkout@v2
+            - uses: actions/checkout@v5
             - run: |
                 ref=`echo ${github_ref} | sed -e 's,refs/heads/,,' | tr '/' '-'`
                 echo $ref
@@ -24,7 +24,7 @@ jobs:
               run: ./gradlew uploadArchives
             - name: cleanup
               run: rm publish_key
-            - uses: actions/upload-artifact@v2-preview
+            - uses: actions/upload-artifact@v6
               with:
                 name: UniversalModCore-${{ env.ref }}
                 path: build/libs/UniversalModCore-*.jar