chore: remove yargs override once c8 updates to yargs 18 #392
Description
Context
PR #391 added an npm overrides entry to force c8 to use yargs@^18.0.0, working around a CJS/ESM interop crash on Node 25 (bcoe/c8#582).
Action
Once bcoe/c8#578 is merged and a new c8 release includes yargs@^18, remove the override from package.json:
"overrides": {
"c8": {
"yargs": "^18.0.0"
}
}