Bump asdf-vm/actions from 3 to 4 (#94)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/tests.yaml

@@ -60,7 +60,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: asdf-vm/actions/install@v3
+      - uses: asdf-vm/actions/install@v4
         with:
           tool_versions: |
             action-validator 0.6.0