I just tested on a macOs 15.6.1 and it works fine (except for the rexml WARN, but I think we had that before too):

puppet agent -t

WARN: Unresolved or ambiguous specs during Gem::Specification.reset:
      rexml (>= 0)
      Available/installed versions of this gem:
      - 3.4.2
      - 3.3.6
WARN: Clearing out unresolved specs. Try 'gem cleanup <gem>'
Please report a bug if this causes problems.
Info: Refreshing CA certificate
Info: CA certificate is unmodified, using existing CA certificate
Info: Refreshing CRL
Info: CRL is unmodified, using existing CRL
Info: Using environment 'production'
Info: Retrieving pluginfacts
Info: Retrieving plugin
Info: Loading facts
Notice: Requesting catalog from <REDACTED>:8140 (<REDACTED>)
Notice: Catalog compiled by <REDACTED>
Info: Caching catalog for <REDACTED>
Info: Applying configuration version '<REDACTED>'
...
Notice: Applied catalog in 11.46 seconds