build(deps): bump actions/upload-artifact from 2 to 4

Bumps [actions/upload-artifact](https://github.com/actions/upload-artifact) from 2 to 4.
- [Release notes](https://github.com/actions/upload-artifact/releases)
- [Commits](actions/upload-artifact@v2...v4)

---
updated-dependencies:
- dependency-name: actions/upload-artifact
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

.github/workflows/test.yml

@@ -74,19 +74,19 @@ jobs:
       - name: Split pkgs into 4 files
         run: split -d -n l/4 pkgs.txt pkgs.txt.part.
       # cache multiple
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           name: "${{ github.sha }}-00"
           path: ./pkgs.txt.part.00
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           name: "${{ github.sha }}-01"
           path: ./pkgs.txt.part.01
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           name: "${{ github.sha }}-02"
           path: ./pkgs.txt.part.02
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           name: "${{ github.sha }}-03"
           path: ./pkgs.txt.part.03
@@ -117,7 +117,7 @@ jobs:
         run: |
           cat pkgs.txt.part.${{ matrix.part }} | xargs go test -mod=readonly -timeout 30m -coverprofile=${{ matrix.part }}profile.out -covermode=atomic -tags='norace ledger test_ledger_mock'
         if: env.GIT_DIFF
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           name: "${{ github.sha }}-${{ matrix.part }}-coverage"
           path: ./${{ matrix.part }}profile.out
@@ -195,7 +195,7 @@ jobs:
         run: |
           xargs --arg-file=pkgs.txt.part.${{ matrix.part }} go test -mod=readonly -timeout 30m -race -tags='cgo ledger test_ledger_mock'
         if: env.GIT_DIFF
-      - uses: actions/upload-artifact@v2
+      - uses: actions/upload-artifact@v4
         with:
           name: "${{ github.sha }}-${{ matrix.part }}-race-output"
           path: ./${{ matrix.part }}-race-output.txt