chore: separate dependency release notes (#2563)

Configure future dependency updates to appear in a dedicated
Dependencies section in Release Please changelogs.

Configure Renovate to use the matching deps conventional commit type.

This is intentionally future-facing and does not modify the current
release PR.

Signed-off-by: Gregor Zeitlinger <gregor.zeitlinger@grafana.com>

Author: zeitlinger

.github/config/release-please-config.json

@@ -4,7 +4,57 @@
   "pull-request-footer": "> [!IMPORTANT]\n> Close and reopen this PR to trigger CI checks.",
   "packages": {
     ".": {
-      "release-type": "maven"
+      "release-type": "maven",
+      "changelog-sections": [
+        {
+          "type": "feat",
+          "section": "Features"
+        },
+        {
+          "type": "fix",
+          "section": "Bug Fixes"
+        },
+        {
+          "type": "perf",
+          "section": "Performance Improvements"
+        },
+        {
+          "type": "deps",
+          "section": "Dependencies"
+        },
+        {
+          "type": "docs",
+          "section": "Internal"
+        },
+        {
+          "type": "style",
+          "section": "Internal"
+        },
+        {
+          "type": "chore",
+          "section": "Internal"
+        },
+        {
+          "type": "refactor",
+          "section": "Internal"
+        },
+        {
+          "type": "test",
+          "section": "Internal"
+        },
+        {
+          "type": "build",
+          "section": "Internal"
+        },
+        {
+          "type": "ci",
+          "section": "Internal"
+        },
+        {
+          "type": "revert",
+          "section": "Internal"
+        }
+      ]
     }
   }
 }

.github/renovate.json5

@@ -6,6 +6,8 @@
     'github>grafana/flint#v0.22.14',
   ],
   platformCommit: 'enabled',
+  semanticCommits: 'enabled',
+  semanticCommitType: 'deps',
   automerge: true,
   ignorePaths: [
     '**/simpleclient-archive/**',