feat: upgrade to commitlint v19

BREAKING CHANGE: `commitlint.config.js` is not supported anymore, please use `.mjs` extension

commitlint.config.mjs

@@ -0,0 +1,28 @@
+/* eslint-disable import/no-extraneous-dependencies */
+import { maxLineLength } from '@commitlint/ensure'
+
+const bodyMaxLineLength = 100
+
+const validateBodyMaxLengthIgnoringDeps = (parsedCommit) => {
+  const { type, scope, body } = parsedCommit
+  const isDepsCommit =
+    type === 'chore' && (scope === 'deps' || scope === 'deps-dev')
+
+  return [
+    isDepsCommit || !body || maxLineLength(body, bodyMaxLineLength),
+    `body's lines must not be longer than ${bodyMaxLineLength}`,
+  ]
+}
+
+export default {
+  extends: ['@commitlint/config-conventional'],
+  plugins: ['commitlint-plugin-function-rules'],
+  rules: {
+    'body-max-line-length': [0],
+    'function-rules/body-max-line-length': [
+      2,
+      'always',
+      validateBodyMaxLengthIgnoringDeps,
+    ],
+  },
+}