Bump cachix/install-nix-action from v11 to v12

dependabot[bot] · web-flow · commit 77f81712baa2 · 2020-11-09T05:34:24.000Z
Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from v11 to v12. - [Release notes](https://github.com/cachix/install-nix-action/releases) - [Commits](cachix/install-nix-action@v11...07da252) Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
@@ -12,6 +12,6 @@ jobs:
     - uses: actions/checkout@v2
       with:
         fetch-depth: 0
-    - uses: cachix/install-nix-action@v11
+    - uses: cachix/install-nix-action@v12
     #- run: nix flake check
     - run: nix-build -A checks.$(if [[ `uname` = Linux ]]; then echo x86_64-linux; else echo x86_64-darwin; fi)
