[ci] Limit depth of initial clone

Author: shs96c

.github/workflows/java.yml

@@ -17,6 +17,8 @@ jobs:
     steps:
       - name: Checkout source tree
         uses: actions/checkout@v2
+        with:
+          fetch-depth: 10
       - name: Cache Bazel artifacts
         uses: actions/cache@v2
         with:

.github/workflows/javascript.yml

@@ -14,6 +14,8 @@ jobs:
     steps:
       - name: Checkout source tree
         uses: actions/checkout@v2
+        with:
+          fetch-depth: 10
       - name: Setup Node.js
         uses: actions/setup-node@v1
         with: