Update CI.

.github/workflows/book.yml

@@ -12,10 +12,6 @@ jobs:
     name: Deploy book on gh-pages
     runs-on: ubuntu-latest
     steps:
-      - uses: actions-rs/toolchain@v1
-        with:
-          toolchain: 1.46
-          override: true
       - name: Checkout
         uses: actions/checkout@v2
       - name: Install mdBook

.github/workflows/ci.yml

@@ -15,7 +15,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.46
+          toolchain: 1.46.0
           override: true
       - name: Check format
         run: cargo fmt --all -- --check

.github/workflows/code-coverage.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v1
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.46
+          toolchain: 1.46.0
           override: true
       - name: Install libsqlite3-dev
         run: |

.github/workflows/release.yml

@@ -39,7 +39,7 @@ jobs:
     steps:
       - uses: actions-rs/toolchain@v1
         with:
-          toolchain: 1.46
+          toolchain: 1.46.0
           override: true
       - name: Checkout
         uses: actions/checkout@v2