Update cachix/install-nix-action action to v29

.github/workflows/ci.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
       - run: nix build .#sharry-dev
   ci-matrix:
     runs-on: ubuntu-latest
@@ -17,7 +17,7 @@ jobs:
       - uses: actions/[email protected]
         with:
           fetch-depth: 100
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
       - name: Fetch tags
         run: git fetch --depth=100 origin +refs/tags/*:refs/tags/*
       - name: Coursier cache

.github/workflows/release-nightly.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/[email protected]
         with:
           fetch-depth: 0
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
       - name: Coursier cache
         uses: coursier/cache-action@v6
       - name: Set current version

.github/workflows/release.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/[email protected]
         with:
           fetch-depth: 0
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
       - name: Coursier cache
         uses: coursier/cache-action@v6
       - name: Set current version

.github/workflows/website.yml

@@ -12,7 +12,7 @@ jobs:
           fetch-depth: 0
       - name: Set current version
         run:  echo "SHARRY_VERSION=$(cat version.sbt | grep version | cut -d= -f2 | xargs)" >> $GITHUB_ENV
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v29
       - name: Build website (${{ env.SHARRY_VERSION }})
         run: nix develop .#ci --command sbt microsite/makeMicrosite
       - name: Publish website (${{ env.SHARRY_VERSION }})