Update actions/upload-artifact and actions/download-artifact

Author: xuwei-k

.github/workflows/ci.yml

@@ -239,7 +239,7 @@ jobs:
 
       - name: Upload target directories
         if: github.event_name != 'pull_request' && (startsWith(github.ref, 'refs/tags/v') || github.ref == 'refs/heads/main')
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v5
         with:
           name: target-${{ matrix.os }}-${{ matrix.java }}-${{ matrix.scala }}-${{ matrix.project }}
           path: targets.tar
@@ -359,7 +359,7 @@ jobs:
         run: sbt +update
 
       - name: Download target directories (2.12, sbt-typelevelJVM)
-        uses: actions/download-artifact@v4
+        uses: actions/download-artifact@v6
         with:
           name: target-${{ matrix.os }}-${{ matrix.java }}-2.12-sbt-typelevelJVM
 

github-actions/src/main/scala/org/typelevel/sbt/gha/GenerativePlugin.scala

@@ -733,7 +733,7 @@ ${indent(jobs.map(compileJob(_, sbt)).mkString("\n\n"), 1)}
         val artifactId = MatrixKeys.groupId(keys)
 
         val upload = WorkflowStep.Use(
-          UseRef.Public("actions", "upload-artifact", "v4"),
+          UseRef.Public("actions", "upload-artifact", "v5"),
           name = Some(s"Upload target directories"),
           params = Map("name" -> s"target-$artifactId", "path" -> "targets.tar"),
           cond = Some(publicationCond.value)
@@ -779,7 +779,7 @@ ${indent(jobs.map(compileJob(_, sbt)).mkString("\n\n"), 1)}
           val pretty = v.mkString(", ")
 
           val download = WorkflowStep.Use(
-            UseRef.Public("actions", "download-artifact", "v4"),
+            UseRef.Public("actions", "download-artifact", "v6"),
             name = Some(s"Download target directories ($pretty)"),
             params =
               Map("name" -> s"target-$${{ matrix.os }}-$${{ matrix.java }}-${v.mkString("-")}")