.github: add dependabot

Author: arl

.github/workflows/test.yml .github/workflows/ci.yml.github/workflows/test.yml renamed to .github/workflows/ci.yml

@@ -2,21 +2,18 @@ on: [push, pull_request]
 name: Test
 jobs:
   test:
-    strategy:
-      matrix:
-        go-version: [1.15.x, 1.16.x]
-        os: [ubuntu-latest]
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
     steps:
       - name: Install Go
         uses: actions/setup-go@v2
         with:
-          go-version: ${{ matrix.go-version }}
+          go-version: 1.16.x
       - name: Checkout code
         uses: actions/checkout@v2
-      - name: Test and coverage
+      - name: Test
         run: |
           go test -coverprofile coverage.txt
           go test -tags bitstring_debug .
+          GOARCH=mips go test
       - name: Codecov
         run: bash <(curl -s https://codecov.io/bash)

.github/workflows/dependabot.yml

@@ -0,0 +1,7 @@
+version: 2
+updates:
+  # Maintain dependencies for GitHub Actions
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    schedule:
+      interval: "daily"