build(deps): bump cachix/cachix-action from 12 to 14

Bumps [cachix/cachix-action](https://github.com/cachix/cachix-action) from 12 to 14.
- [Release notes](https://github.com/cachix/cachix-action/releases)
- [Commits](cachix/cachix-action@v12...v14)

---
updated-dependencies:
- dependency-name: cachix/cachix-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/lint.yml

@@ -58,7 +58,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: cachix/install-nix-action@v20
-      - uses: cachix/cachix-action@v12
+      - uses: cachix/cachix-action@v14
         with:
           name: ethermint
       - uses: technote-space/get-diff-action@v6.1.2
@@ -74,7 +74,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: cachix/install-nix-action@v20
-      - uses: cachix/cachix-action@v12
+      - uses: cachix/cachix-action@v14
         with:
           name: ethermint
       - uses: technote-space/get-diff-action@v6.1.2

.github/workflows/test.yml

@@ -88,7 +88,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: cachix/install-nix-action@v20
-      - uses: cachix/cachix-action@v12
+      - uses: cachix/cachix-action@v14
         with:
           name: ethermint
           signingKey: "${{ secrets.CACHIX_SIGNING_KEY }}"
@@ -123,7 +123,7 @@ jobs:
     steps:
       - uses: actions/checkout@v3
       - uses: cachix/install-nix-action@v20
-      - uses: cachix/cachix-action@v12
+      - uses: cachix/cachix-action@v14
         with:
           name: ethermint
           signingKey: "${{ secrets.CACHIX_SIGNING_KEY }}"