Configure Renovate (#90)

---------

Signed-off-by: Dan Barr <[email protected]>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

renovate.json

@@ -0,0 +1,18 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended",
+    "group:linters",
+    "helpers:pinGitHubActionDigests",
+    ":gitSignOff",
+    ":semanticCommitsDisabled"
+  ],
+  "labels": ["dependencies"],
+  "packageRules": [
+    {
+      "matchPackageNames": ["husky", "lint-staged", "markdownlint*", "globals"],
+      "groupName": "linters",
+      "extends": ["schedule:weekly"]
+    }
+  ]
+}