v1.6.2 — fix asset cache-busting

Fixed

• CCC_VERSION constant was stuck at 1.6.0 — a separate string from the plugin header's Version: field, and it's the one that actually drives the ?ver= cache-busting query on every enqueued asset (banner.css, consent.js, open-cookie-db.json). Because it never got bumped, the v1.6.1 outline-border fix shipped under a URL byte-identical to the cached 1.6.0 asset — so most visitors would not have received it without an edge/browser cache purge, even after the file changed on disk.

No functional or visual change beyond what v1.6.1 already shipped — this release exists purely to make that fix actually reach browsers.

Full Changelog: v1.6.1...v1.6.2