fix(ci): Allow commit messages to start with a capital

This relaxes the commit linter checks, otherwise this very commit would
fail.

Fixes: #2044

Author: jponge

.commitlintrc.json

@@ -0,0 +1,10 @@
+{
+  "extends": ["@commitlint/config-conventional"],
+  "rules": {
+    "subject-case": [
+      2,
+      "never",
+      ["upper-case", "pascal-case", "start-case"]
+    ]
+  }
+}