Bump actions/checkout from 6 to 7

.github/workflows/benchmark.yml

@@ -22,7 +22,7 @@ jobs:
     name: qmatmul benchmark
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
         with:
@@ -44,7 +44,7 @@ jobs:
     name: matmul benchmark
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
         with:
@@ -67,7 +67,7 @@ jobs:
     name: elementwise benchmark
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
         with:
@@ -89,7 +89,7 @@ jobs:
     name: fused benchmark
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
         with:
@@ -111,7 +111,7 @@ jobs:
     name: reduce benchmark
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
         with:
@@ -133,7 +133,7 @@ jobs:
     name: pairwise benchmark
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
         with:

.github/workflows/macos.yml

@@ -63,7 +63,7 @@ jobs:
     steps:
       # Checkout before rust-cache so the cache key hashes Cargo.lock
       # instead of just the toolchain.
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@stable
       - uses: Swatinem/rust-cache@v2
         with:

.github/workflows/main.yml

@@ -71,7 +71,7 @@ jobs:
       # Checkout MUST come before `Swatinem/rust-cache` so the cache key
       # hashes the real `Cargo.lock`. Without it every job gets the same
       # toolchain-only key and clobbers the previous job's cache.
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: awalsh128/cache-apt-pkgs-action@latest
         with:
           packages: libwebkit2gtk-4.1-dev libgtk-3-dev libasound2-dev libayatana-appindicator3-dev libxdo-dev
@@ -103,7 +103,7 @@ jobs:
     name: Test Suite
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Free disk space
         shell: bash
         run: |
@@ -167,7 +167,7 @@ jobs:
     name: Docs
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - name: Free disk space
         shell: bash
         run: |
@@ -199,7 +199,7 @@ jobs:
     name: Rustfmt
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: dtolnay/rust-toolchain@stable
         with:
           components: rustfmt
@@ -210,7 +210,7 @@ jobs:
     name: Clippy
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@v7
       - uses: awalsh128/cache-apt-pkgs-action@latest
         with:
           packages: libwebkit2gtk-4.1-dev libgtk-3-dev libasound2-dev libayatana-appindicator3-dev libxdo-dev

.github/workflows/windows.yml

@@ -75,7 +75,7 @@ jobs:
         run: git config --global core.autocrlf false
 
       - name: checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@v7
 
       # `dtolnay/rust-toolchain` is a single-step toolchain install that
       # uses the GitHub Actions toolchain cache; much faster than the