Configure Renovate (#1)

* Add renovate.json

* Update renovate.json

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Lilly Tempest <46890129+rainbowdashlabs@users.noreply.github.com>

Author: renovate[bot]

renovate.json

@@ -0,0 +1,9 @@
+{
+  "baseBranches": ["dev"],
+  "dependencyDashboard": true,
+  "labels": ["dependencies"],
+  "extends": ["config:base"],
+  "ignoreDeps": ["spigot-api", "MockBukkit-v1.19"],
+  "reviewers": ["RainbowDashLabs", "SirYwell", "Aurelien30000"],
+  "prConcurrentLimit": 3
+}