Add gha for tests, dependabot. Fixes chainguard-dev#28, chainguard-de…

…v#97.

Signed-off-by: Ville Aikas <vaikas@chainguard.dev>

.github/dependabot.yml

@@ -0,0 +1,13 @@
+version: 2
+updates:
+- package-ecosystem: gomod
+  directory: "/"
+  schedule:
+    interval: weekly
+  open-pull-requests-limit: 10
+
+- package-ecosystem: "github-actions"
+  directory: "/"
+  schedule:
+    interval: weekly
+  open-pull-requests-limit: 10

.github/workflows/go-tests.yaml

@@ -0,0 +1,32 @@
+name: Go Tests
+
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
+
+jobs:
+  test:
+    runs-on: ubuntu-latest
+
+    permissions:
+      contents: read
+
+    steps:
+      - uses: step-security/harden-runner@63c24ba6bd7ba022e95695ff85de572c04a18142 # v2.7.0
+        with:
+          egress-policy: audit
+
+      - uses: actions/setup-go@0c52d547c9bc32b1aa3301fd7a9cb496313a4491 # v5.0.0
+        with:
+          go-version: '1.21'
+          check-latest: true
+
+      - name: Checkout code
+        uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # v4.1.2
+
+      - uses: chainguard-dev/actions/goimports@main
+
+      - name: Test
+        run: make test