Fetch 1 commit for GitHub actions

Author: Seulgi Kim

.github/workflows/build.yml

@@ -12,6 +12,8 @@ jobs:
       fail-fast: false
     steps:
       - uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: 1.39.0

.github/workflows/cargo-test.yml

@@ -8,6 +8,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: nightly-2019-11-06
@@ -22,6 +24,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: nightly-2019-11-06
@@ -38,6 +42,8 @@ jobs:
         os: [macOS-latest, ubuntu-latest]
     steps:
       - uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
       - uses: actions-rs/toolchain@v1
         with:
           toolchain: 1.39.0

.github/workflows/yarn-lint.yml

@@ -8,6 +8,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
+        with:
+          fetch-depth: 1
       - working-directory: ./test
         run: yarn
       - working-directory: ./test