Update zowe component versions for 3.0.0

[t1m0thyj]

What It Does

Updates component versions for V3:

• Zowe CLI and SDKs - v8.0.0
• CLI plug-ins - Prerelease versions for RC1, will update later

How to Test

Review Checklist I certify that I have:

• [ ] tested my changes
• [ ] added/updated automated tests
• [ ] updated the changelog
• [ ] followed the contribution guidelines

Additional Comments

[github-actions[bot]]

The following artifacts have been published:

• zowe-cli-package-3.0.0-RC2.zip
• zowe-cli-plugins-3.0.0-RC2.zip
• zowe-nodejs-sdk-3.0.0-RC2.zip
• zowe-nodejs-sdk-typedoc-3.0.0-RC2.zip
• zowe-python-sdk-3.0.0-RC2.zip