ci: switch commit message format to conventional-commits

* https://www.conventionalcommits.org/

Author: dafyddj

release-rules.js

@@ -1,11 +1,36 @@
-module.exports = {
+// Commit types appear in the changelog in this order
+const commitTypes = [
+  { type: 'feat', section: 'Features' },
+  { type: 'fix', section: 'Bug Fixes' },
+  { type: 'perf', section: 'Performance Improvements' },
+  { type: 'revert', section: 'Reversions' },
+  { type: 'refactor', section: 'Code Refactoring' },
+  { type: 'docs', section: 'Documentation' },
+  { type: 'test', section: 'Testing' },
+  { type: 'style', section: 'Style Changes' },
+  { type: 'ci', section: 'Continuous Integration' },
+  { type: 'build', section: 'Build System' },
+  { type: 'chore', section: 'Maintenance' }
+]
+
+// Default rules can be found in `github.com/semantic-release/commit-analyzer/lib/default-release-rules.js`
+// that cover feat, fix, perf and breaking.
+// Commit types defined above but without release rules do not trigger a release
+// but will be incorporated into the next release.
+// NOTE: Any changes to commit types or release rules must be reflected in `CONTRIBUTING.rst`.
+const releaseRules = [
+  { type: 'docs', release: 'patch' },
+  { type: 'refactor', release: 'patch' },
+  { type: 'revert', release: 'patch' },
+  { type: 'style', release: 'patch' },
+  { type: 'test', release: 'patch' }
+]
+
+const config = {
   // TODO: remove this when we no longer process releases on GitLab CI
   repositoryUrl: 'https://github.com/saltstack-formulas/template-formula',
   plugins: [
-    ['@semantic-release/commit-analyzer', {
-      preset: 'angular',
-      releaseRules: './release-rules.js'
-    }],
+    ['@semantic-release/commit-analyzer', { releaseRules }],
     '@semantic-release/release-notes-generator',
     ['@semantic-release/changelog', {
       changelogFile: 'CHANGELOG.md',
@@ -20,7 +45,10 @@ module.exports = {
     }],
     '@semantic-release/github'
   ],
-  generateNotes: {
-    preset: 'angular'
+  preset: 'conventionalcommits',
+  presetConfig: {
+    types: commitTypes
   }
 }
+
+module.exports = config