Fix wrong independent version on first time publish

[t1m0thyj]

Follow up for #128 to fix the version bump from 2.3.2 to 3.0.0 on the CICS VSCE in https://github.com/zowe/cics-for-zowe-client/commit/17f8b88232eb214f290291c9e2f91504bb271007

Also fixes:

• Changelog header not updated when PR is tagged as release-current
• lerna.json should be auto-created if using Lerna plugin and it doesn't exist

[zFernand0]

Also, it used the lerna.json as a fallback since there was no git tag on the repo 😋

[zFernand0]

This seems to work as expected LGTM! 😋 https://github.com/zowe/cics-for-zowe-client/actions/runs/7785494814/job/21228475834