chore(deps): bump cachix/install-nix-action from 31.8.0 to 31.8.1

Bumps [cachix/install-nix-action](https://github.com/cachix/install-nix-action) from 31.8.0 to 31.8.1.
- [Release notes](https://github.com/cachix/install-nix-action/releases)
- [Changelog](https://github.com/cachix/install-nix-action/blob/master/RELEASE.md)
- [Commits](cachix/install-nix-action@7ab6e7f...fd24c48)

---
updated-dependencies:
- dependency-name: cachix/install-nix-action
  dependency-version: 31.8.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

.github/workflows/deltachat-rpc-server.yml

@@ -34,7 +34,7 @@ jobs:
         with:
           show-progress: false
           persist-credentials: false
-      - uses: cachix/install-nix-action@7ab6e7fd29da88e74b1e314a4ae9ac6b5cda3801 # v31
+      - uses: cachix/install-nix-action@fd24c48048070c1be9acd18c9d369a83f0fe94d7 # v31
 
       - name: Build deltachat-rpc-server binaries
         run: nix build .#deltachat-rpc-server-${{ matrix.arch }}-linux
@@ -58,7 +58,7 @@ jobs:
         with:
           show-progress: false
           persist-credentials: false
-      - uses: cachix/install-nix-action@7ab6e7fd29da88e74b1e314a4ae9ac6b5cda3801 # v31
+      - uses: cachix/install-nix-action@fd24c48048070c1be9acd18c9d369a83f0fe94d7 # v31
 
       - name: Build deltachat-rpc-server binaries
         run: nix build .#deltachat-rpc-server-${{ matrix.arch }}
@@ -109,7 +109,7 @@ jobs:
         with:
           show-progress: false
           persist-credentials: false
-      - uses: cachix/install-nix-action@7ab6e7fd29da88e74b1e314a4ae9ac6b5cda3801 # v31
+      - uses: cachix/install-nix-action@fd24c48048070c1be9acd18c9d369a83f0fe94d7 # v31
 
       - name: Build deltachat-rpc-server binaries
         run: nix build .#deltachat-rpc-server-${{ matrix.arch }}-android
@@ -136,7 +136,7 @@ jobs:
         with:
           show-progress: false
           persist-credentials: false
-      - uses: cachix/install-nix-action@7ab6e7fd29da88e74b1e314a4ae9ac6b5cda3801 # v31
+      - uses: cachix/install-nix-action@fd24c48048070c1be9acd18c9d369a83f0fe94d7 # v31
 
       - name: Download Linux aarch64 binary
         uses: actions/download-artifact@v5

.github/workflows/nix.yml

@@ -25,7 +25,7 @@ jobs:
         with:
           show-progress: false
           persist-credentials: false
-      - uses: cachix/install-nix-action@7ab6e7fd29da88e74b1e314a4ae9ac6b5cda3801 # v31
+      - uses: cachix/install-nix-action@fd24c48048070c1be9acd18c9d369a83f0fe94d7 # v31
       - run: nix fmt flake.nix -- --check
 
   build:
@@ -84,7 +84,7 @@ jobs:
         with:
           show-progress: false
           persist-credentials: false
-      - uses: cachix/install-nix-action@7ab6e7fd29da88e74b1e314a4ae9ac6b5cda3801 # v31
+      - uses: cachix/install-nix-action@fd24c48048070c1be9acd18c9d369a83f0fe94d7 # v31
       - run: nix build .#${{ matrix.installable }}
 
   build-macos:
@@ -105,5 +105,5 @@ jobs:
         with:
           show-progress: false
           persist-credentials: false
-      - uses: cachix/install-nix-action@7ab6e7fd29da88e74b1e314a4ae9ac6b5cda3801 # v31
+      - uses: cachix/install-nix-action@fd24c48048070c1be9acd18c9d369a83f0fe94d7 # v31
       - run: nix build .#${{ matrix.installable }}

.github/workflows/repl.yml

@@ -18,7 +18,7 @@ jobs:
         with:
           show-progress: false
           persist-credentials: false
-      - uses: cachix/install-nix-action@7ab6e7fd29da88e74b1e314a4ae9ac6b5cda3801 # v31
+      - uses: cachix/install-nix-action@fd24c48048070c1be9acd18c9d369a83f0fe94d7 # v31
       - name: Build
         run: nix build .#deltachat-repl-win64
       - name: Upload binary

.github/workflows/upload-docs.yml

@@ -36,7 +36,7 @@ jobs:
           show-progress: false
           persist-credentials: false
           fetch-depth: 0 # Fetch history to calculate VCS version number.
-      - uses: cachix/install-nix-action@7ab6e7fd29da88e74b1e314a4ae9ac6b5cda3801 # v31
+      - uses: cachix/install-nix-action@fd24c48048070c1be9acd18c9d369a83f0fe94d7 # v31
       - name: Build Python documentation
         run: nix build .#python-docs
       - name: Upload to py.delta.chat
@@ -55,7 +55,7 @@ jobs:
           show-progress: false
           persist-credentials: false
           fetch-depth: 0 # Fetch history to calculate VCS version number.
-      - uses: cachix/install-nix-action@7ab6e7fd29da88e74b1e314a4ae9ac6b5cda3801 # v31
+      - uses: cachix/install-nix-action@fd24c48048070c1be9acd18c9d369a83f0fe94d7 # v31
       - name: Build C documentation
         run: nix build .#docs
       - name: Upload to c.delta.chat