Bump actions/checkout and actions/download-artifact.

Author: mstange

.github/workflows/nix-packaging.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-22.04
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: cachix/install-nix-action@v31
         with:
           nix_path: nixpkgs=channel:nixos-23.11

.github/workflows/rust.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - run: rustup update stable
       - name: Check formatting
         run: cargo fmt --all --check --verbose
@@ -48,7 +48,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Install sccache
         uses: mozilla-actions/[email protected]
@@ -98,7 +98,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Install sccache
         uses: mozilla-actions/[email protected]
@@ -143,7 +143,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Install sccache
         uses: mozilla-actions/[email protected]