Min member name length = 1

[Martin-Zeithaml]

Proposed changes

This PR addresses Issue: https://github.com/zowe/zowe-common-c/issues/430

Type of change

Please delete options that are not relevant.

• [x] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)

PR Checklist

Please delete options that are not relevant.

• [x] If the changes in this PR are meant for the next release / mainline, this PR targets the "staging" branch.
• [x] My code follows the style guidelines of this project (see: Contributing guideline)
• [x] Relevant update to CHANGELOG.md

Testing

Before

/zowe/runtime/2140/bin: ./zwe config validate -c "PARMLIB(JCONNOR.ZOWE.YAML(A))"
Error: Could not set parmlib member name for A, status=6

After

/zowe/runtime/2150/bin: ./zwe config validate -c "PARMLIB(JCONNOR.ZOWE.YAML(A))"
Temporary directory '/skynet/tmp/.zweenv-8066' created.
Zowe will remove it on success, but if zwe exits with a non-zero code manual cleanup would be needed.
2024-03-20 11:54:23 <ZWELS:84282083> JCONNOR INFO (zwe-internal-start-prepare) Zowe version: v2.15.0
2024-03-20 11:54:23 <ZWELS:84282083> JCONNOR INFO (zwe-internal-start-prepare) build and hash: v2.x/master#4702 (3b20609fdb0c600941baf68a8f34f5568c9d71e4)
Validating Zowe core configuration for file(s)=/skynet/tmp/.zweenv-8066/.zowe-merged.yaml
Zowe core configuration is valid
Temporary directory /skynet/tmp/.zweenv-8066 removed successfully.