chore: configure renovate (#76)

Author: jackwotherspoon

.github/renovate.json

@@ -0,0 +1,14 @@
+{
+    "extends": [
+      "config:base",
+      ":semanticCommitTypeAll(chore)"
+    ],
+    "ignorePresets": [":semanticPrefixFixDepsChoreOthers"],
+    "prConcurrentLimit": 0,
+    "rebaseStalePrs": true,
+    "dependencyDashboard": true,
+    "semanticCommits": true,
+    "pip_requirements": {
+      "fileMatch": ["requirements-test.txt"]
+    }
+  }