chore(deps): fix renovate grouping for python and js tools (#348)

- Add esbuild, dotenv, dotenv-expand to JS tools group
- Switch Python group to matchFileNames docker/** (more reliable than matchManagers)

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: drernie

renovate.json

@@ -10,6 +10,9 @@
         "ora",
         "commander",
         "ajv",
+        "esbuild",
+        "dotenv",
+        "dotenv-expand",
         "/typescript/",
         "/eslint/",
         "/node/"
@@ -25,14 +28,8 @@
     },
     {
       "groupName": "Python dependencies",
-      "matchManagers": [
-        "uv",
-        "pip_requirements",
-        "pip-compile"
-      ],
-      "matchPackageNames": [
-        "/.*/"
-      ]
+      "matchFileNames": ["docker/**"],
+      "matchPackageNames": ["/./"]
     }
   ]
 }