build(deps): bump the actions group with 2 updates

Bumps the actions group with 2 updates: [DeterminateSystems/nix-installer-action](https://github.com/determinatesystems/nix-installer-action) and [DeterminateSystems/magic-nix-cache-action](https://github.com/determinatesystems/magic-nix-cache-action).


Updates `DeterminateSystems/nix-installer-action` from 10 to 11
- [Release notes](https://github.com/determinatesystems/nix-installer-action/releases)
- [Commits](DeterminateSystems/nix-installer-action@v10...v11)

Updates `DeterminateSystems/magic-nix-cache-action` from 4 to 6
- [Release notes](https://github.com/determinatesystems/magic-nix-cache-action/releases)
- [Commits](DeterminateSystems/magic-nix-cache-action@v4...v6)

---
updated-dependencies:
- dependency-name: DeterminateSystems/nix-installer-action
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
- dependency-name: DeterminateSystems/magic-nix-cache-action
  dependency-type: direct:production
  update-type: version-update:semver-major
  dependency-group: actions
...

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

.github/workflows/auto-codespell.yml

@@ -24,10 +24,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/[email protected]
-    - uses: DeterminateSystems/nix-installer-action@v10
+    - uses: DeterminateSystems/nix-installer-action@v11
       with:
         diagnostic-endpoint: ""
-    - uses: DeterminateSystems/magic-nix-cache-action@v4
+    - uses: DeterminateSystems/magic-nix-cache-action@v6
       with:
         diagnostic-endpoint: ""
     - name: Checkout

.github/workflows/auto-gen-docs.yaml

@@ -33,10 +33,10 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name == 'pull_request' || (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master')
     steps:
-      - uses: DeterminateSystems/nix-installer-action@v10
+      - uses: DeterminateSystems/nix-installer-action@v11
         with:
           diagnostic-endpoint: ""
-      - uses: DeterminateSystems/magic-nix-cache-action@v4
+      - uses: DeterminateSystems/magic-nix-cache-action@v6
         with:
           diagnostic-endpoint: ""
       - name: Checkout code
@@ -68,10 +68,10 @@ jobs:
     runs-on: ubuntu-latest
     if: github.event_name == 'pull_request' || (github.ref == 'refs/heads/main' || github.ref == 'refs/heads/master')
     steps:
-      - uses: DeterminateSystems/nix-installer-action@v10
+      - uses: DeterminateSystems/nix-installer-action@v11
         with:
           diagnostic-endpoint: ""
-      - uses: DeterminateSystems/magic-nix-cache-action@v4
+      - uses: DeterminateSystems/magic-nix-cache-action@v6
         with:
           diagnostic-endpoint: ""
       - name: Checkout code