Update coverage.yml, doc.yml, and test.yml to latest actions.

Author: vthg2themax

.github/workflows/coverage.yml

@@ -6,7 +6,7 @@ jobs:
   coverage:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@nightly
         with:

.github/workflows/doc.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: pull the code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
       - name: install dependencies
         run: pip install -r requirements.txt
       - name: build and deploy

.github/workflows/test.yml

@@ -27,7 +27,7 @@ jobs:
             toolchain: nightly
 
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@master
         with:
@@ -50,7 +50,7 @@ jobs:
   test-miri:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Install toolchain
         run: |
           MIRI_NIGHTLY=nightly-$(curl -s https://rust-lang.github.io/rustup-components-history/x86_64-unknown-linux-gnu/miri)
@@ -64,7 +64,7 @@ jobs:
   test-ios:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v7
       - name: Install toolchain
         uses: dtolnay/rust-toolchain@nightly
         with: