Switch from Dependabot to Renovate

.github/dependabot.yml

@@ -1,12 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: cargo
-    directory: "/"
-    schedule:
-      interval: weekly
-    open-pull-requests-limit: 15
-
-  - package-ecosystem: github-actions
-    directory: "/"
-    schedule:
-      interval: monthly

.github/renovate.json5

@@ -0,0 +1,25 @@
+{
+    extends: [
+        "config:best-practices",
+        "schedule:monthly",
+        // Group updates to linters together in one PR
+        "group:linters",
+    ],
+    dependencyDashboard: true,
+    "labels": ["dependencies"],
+    lockFileMaintenance: {
+        enabled: true,
+        automerge: true
+    },
+    packageRules: [
+        {
+            matchCategories: ["rust"],
+            minimumReleaseAge: "3 days",
+            automerge: true
+        },
+  ],
+  ignorePaths: [
+    // Auto-generated by cargo-dist (https://opensource.axo.dev/cargo-dist/)
+    ".github/workflows/release.yml"
+  ]
+}