build(deps): bump actions/checkout from 4.1.7 to 4.2.1

Bumps [actions/checkout](https://github.com/actions/checkout) from 4.1.7 to 4.2.1.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v4.1.7...v4.2.1)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/coverage.yaml

@@ -23,7 +23,7 @@ jobs:
       RUST_BACKTRACE: full
 
     steps:
-      - uses: actions/checkout@v4.1.7
+      - uses: actions/checkout@v4.2.1
         with:
           persist-credentials: false
 

.github/workflows/docs.yml

@@ -36,7 +36,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the source code
-        uses: actions/checkout@v4.1.7
+        uses: actions/checkout@v4.2.1
         with:
           persist-credentials: false
 

.github/workflows/main.yml

@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4.1.7
+      - uses: actions/checkout@v4.2.1
       - uses: actions-rs/[email protected]
         with:
           toolchain: beta
@@ -29,7 +29,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4.1.7
+      - uses: actions/checkout@v4.2.1
       # Re-resolve Cargo.lock with minimal versions.
       # This only works with nightly. We pin to a specific version because
       # newer versions use lock file version 4, but the MSRV cargo does not
@@ -51,7 +51,7 @@ jobs:
   #   runs-on: ubuntu-latest
 
   #   steps:
-  #     - uses: actions/checkout@v4.1.7
+  #     - uses: actions/checkout@v4.2.1
   #     - uses: dtolnay/rust-toolchain@stable
   #     - run: cargo install cargo-all-features
   #     # We check and then test because some test dependencies could help
@@ -71,7 +71,7 @@ jobs:
       matrix:
         crate: [ristretto255, ed25519, p256, secp256k1, rerandomized]
     steps:
-    - uses: actions/checkout@v4.1.7
+    - uses: actions/checkout@v4.2.1
     - uses: dtolnay/rust-toolchain@master
       with:
         toolchain: stable
@@ -84,7 +84,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4.1.7
+      - uses: actions/checkout@v4.2.1
       - uses: actions-rs/[email protected]
         with:
           toolchain: beta
@@ -99,7 +99,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4.1.7
+      - uses: actions/checkout@v4.2.1
         with:
           persist-credentials: false
 
@@ -134,7 +134,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4.1.7
+      - uses: actions/checkout@v4.2.1
         with:
           persist-credentials: false
 
@@ -156,7 +156,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4.1.7
+      - uses: actions/checkout@v4.2.1
         with:
           persist-credentials: false
 
@@ -178,7 +178,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v4.1.7
+      - uses: actions/checkout@v4.2.1
         with:
           persist-credentials: false
 
@@ -197,7 +197,7 @@ jobs:
     runs-on: ubuntu-latest
     continue-on-error: true
     steps:
-      - uses: actions/checkout@v4.1.7
+      - uses: actions/checkout@v4.2.1
       - uses: reviewdog/[email protected]
         with:
           level: warning