ci(renovate): configure automated dependency updates with grouping

renovate.json

@@ -0,0 +1,56 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "description": "Configuração do Renovate para o CyberCore Signer com suporte ao Gitea",
+  "extends": [
+    "config:recommended"
+  ],
+  "platform": "gitea",
+  "dependencyDashboard": true,
+  "semanticCommits": "enabled",
+  "commitMessagePrefix": "chore(deps):",
+  "timezone": "America/Sao_Paulo",
+  "rebaseWhen": "auto",
+  "packageRules": [
+    {
+      "description": "Agrupamento de bibliotecas criptográficas Bouncy Castle",
+      "groupName": "Bouncy Castle",
+      "matchPackagePatterns": [
+        "^org\\.bouncycastle:"
+      ]
+    },
+    {
+      "description": "Agrupamento do framework de renderização e manipulação de PDF Apache PDFBox",
+      "groupName": "Apache PDFBox",
+      "matchPackagePatterns": [
+        "^org\\.apache\\.pdfbox:"
+      ]
+    },
+    {
+      "description": "Agrupamento de serialização e parsing JSON Jackson",
+      "groupName": "Jackson",
+      "matchPackagePatterns": [
+        "^com\\.fasterxml\\.jackson(\\..*)?:"
+      ]
+    },
+    {
+      "description": "Agrupamento dos módulos da interface gráfica JavaFX (OpenJFX)",
+      "groupName": "JavaFX",
+      "matchPackagePatterns": [
+        "^org\\.openjfx:"
+      ]
+    },
+    {
+      "description": "Agrupamento de frameworks de teste (JUnit, AssertJ, Mockito, ArchUnit)",
+      "groupName": "Test Dependencies",
+      "matchPackagePatterns": [
+        "^org\\.junit",
+        "^org\\.assertj:",
+        "^org\\.mockito:",
+        "^com\\.tngtech\\.archunit:"
+      ]
+    }
+  ],
+  "vulnerabilityAlerts": {
+    "enabled": true
+  }
+}