fix: configure commitlint to ignore dependabot commits & set more rules

same as in smbackend and kerrokantasi-ui projects
- https://github.com/City-of-Helsinki/smbackend/
- https://github.com/City-of-Helsinki/kerrokantasi-ui

Author: karisal-anders

commitlint.config.cjs

@@ -1,22 +1,26 @@
 module.exports = {
   extends: ['@commitlint/config-conventional'],
+  ignores: [(message) => message.includes('Signed-off-by: dependabot[bot]')],
   rules: {
+    'header-max-length': [2, 'always', 72],
+    'body-max-line-length': [2, 'always', 72],
+    'body-leading-blank': [2, 'always'],
     'type-enum': [
       2,
       'always',
       [
+        'build',
+        'chore',
+        'ci',
+        'deps',
+        'docs',
         'feat',
         'fix',
-        'docs',
-        'chore',
-        'build',
-        'style',
+        'perf',
         'refactor',
-        'ci',
-        'test',
         'revert',
-        'perf',
-        'vercel',
+        'style',
+        'test',
       ],
     ],
   },