LDEV-6189 fix malformed Require-Bundle symbolic name

[zspitzer]

Summary

• Fix Require-Bundle in MANIFEST.MF — was using Maven coordinates (com.neovisionaries:nv-websocket-client) instead of the actual OSGi Bundle-SymbolicName (com.neovisionaries.ws.client). This header has never matched anything.
• Remove redundant Import-Package — with a correct Require-Bundle, the dependency's exports are automatically visible
• Update CI: build once test separately, Lucee 6.2+7.0 matrix, Java 11+21, deploy gated to master
• Replace placeholder test with proper OSGi resolution test
• Add CHANGELOG

Context

LDEV-6189

The malformed Require-Bundle meant Lucee's first recovery mechanism (loadBundles in OSGiUtil._start()) could never pre-load the nv-websocket-client dependency before Felix tried to resolve the extension bundle. This caused flaky OSGi resolution failures on Lucee 7.0 cold start in CI.

Test plan

• CI passes across all 8 matrix combinations (6.2/7.0 × snapshot/stable × Java 11/21)
• Local repro script confirms OSGi wiring uses Require-Bundle path (not loadBundleByPackage fallback)