try parallelizing nix

Author: Sanae6

.github/workflows/deploy.yaml

@@ -9,7 +9,7 @@ jobs:
     runs-on: eepy-runner-set
     steps:
     - uses: actions/checkout@v4
-    - run: nix run -L '.#pushDockerImageActions'
+    - run: nix run -j32 -L '.#pushDockerImageActions'
     - run: GIT_REV=${{ github.sha }} nu -c 'open .kube/version.yaml -r | from yaml | update value $"kokuzo.tailc38f.ts.net/personal-api:${{ github.sha }}" | to yaml | save .kube/version.yaml -f'
     - run: |
         git config --global user.name 'GitHub Actions'