feat: renovate all the way

Because dependabot is lazy on weekends.

.github/dependabot.yml

@@ -1,12 +0,0 @@
-version: 2
-updates:
-  - package-ecosystem: github-actions
-    directory: "/"
-    schedule:
-      interval: daily
-    target-branch: main
-  - package-ecosystem: cargo
-    directory: "/"
-    schedule:
-      interval: "daily"
-    target-branch: main

DIFFERENCES.md

@@ -2,7 +2,7 @@
 
 - GitLab CI ported to GitHub Actions
 - Fixed every single clippy (default lints) and rustc warnings, including some that were performance related or potential safety issues / unsoundness
-- Has dependabot and significantly updates all dependencies possible
+- Has Renovate and significantly updates all dependencies possible
 - Uses proper argon2 crate instead of questionable rust-argon2 crate
 - Improved and cleaned up logging (less noisy dead server logging, registration attempts, more useful troubleshooting logging, etc)
 - Attempts and interest in removing extreme and unnecessary panics/unwraps/expects that can lead to denial of service or such (upstream and upstream contributors want this unusual behaviour for some reason)

renovate.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "schedule": [
-    "at any time"
+  "extends": [
+    "config:recommended"
   ],
   "lockFileMaintenance": {
     "enabled": true,
@@ -10,13 +10,6 @@
     ]
   },
   "nix": {
-    "schedule": [
-      "at any time"
-    ],
     "enabled": true
-  },
-  "enabledManagers": [
-    "github-actions",
-    "nix"
-  ]
-}
+  }
+}