build(deps): bump cachix/install-nix-action from V28 to 29

Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from V28 to 29. This release includes the previously tagged commit.
- [Release notes](https://github.com/cachix/install-nix-action/releases)
- [Commits](cachix/install-nix-action@V28...v29)

---
updated-dependencies:
- dependency-name: cachix/install-nix-action
  dependency-type: direct:production
...

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

.github/workflows/build.yml

@@ -42,7 +42,7 @@ jobs:
         fetch-depth: 0
 
     - name: Install Nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
 
     - name: Install Cachix
       uses: cachix/cachix-action@v15

.github/workflows/update-flake.yml

@@ -21,7 +21,7 @@ jobs:
         DOPPLER_TOKEN: ${{ secrets.DOPPLER_TOKEN }}
 
     - name: Install Nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         nix_path: nixpkgs=channel:nixpkgs-unstable
 
@@ -67,7 +67,7 @@ jobs:
         fetch-depth: 0
 
     - name: Install Nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
 
     - name: Install Cachix
       uses: cachix/cachix-action@v15

.github/workflows/update-version.yml

@@ -31,7 +31,7 @@ jobs:
         DOPPLER_TOKEN: ${{ secrets.DOPPLER_TOKEN }}
 
     - name: Install Nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
       with:
         nix_path: nixpkgs=channel:nixpkgs-unstable
 
@@ -118,7 +118,7 @@ jobs:
         fetch-depth: 0
 
     - name: Install Nix
-      uses: cachix/install-nix-action@V28
+      uses: cachix/install-nix-action@v29
 
     - name: Install Cachix
       uses: cachix/cachix-action@v15