Adding Node V22 note for DB2 plug-in

[anaxceron]

Describe your pull request here: Address Issue 3943

List the file(s) included in this PR: cli-swreqplugins.md, cli-db2plugin.md

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[github-actions]

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[github-actions]

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[adam-wolfe]

LGTM, thanks @anaxceron

[t1m0thyj]

LGTM, thanks @anaxceron!