Fix invalid Renovate packageRules matcher

[febus982]

Closes: #93

Renovate is currently refusing to open PRs on this repo:

packageRules[0].matchPackageNames: Your input contains * or ** along with other patterns. Please remove them, as * or ** matches all patterns.

Root cause

matchPackagePatterns and excludePackageNames are both deprecated. Renovate's config migration collapses them into a single key:

"matchPackageNames": ["*", "!python"]

* is a special value meaning "match everything" and cannot be combined with any other pattern — so the migrated config is invalid. That's why the error names a key the file didn't literally contain.

Fix

Use the negation-only form. A match succeeds when at least one positive pattern matches (vacuously true when there are none) and no negative pattern matches, so every package is still grouped except python — same behaviour as before.

-      "matchPackagePatterns": [
-        "*"
+      "matchPackageNames": [
+        "!python"
       ],
-      "excludePackageNames": ["python"],

Verification

renovate-config-validator reproduces the reported error on the old config and passes on the new one:

$ npx --package renovate renovate-config-validator old-renovate.json
ERROR: Found errors in configuration
       "message": "packageRules[0].matchPackageNames: Your input contains * or ** along with other patterns. ..."

$ npx --package renovate renovate-config-validator renovate.json
 INFO: Config validated successfully against 1 file(s)

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