* Updates to add secret_sync to GKE module in CFF
* updated READMEs against the python tfdoc command
* updated version for secret_sync to reflect 7.12.0
* update provider versions to 7.12.0
* Updated READMEs which got clobbered by merge with main
* Fixed test errors in secret-manager module
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Co-authored-by: Ludovico Magnocavallo <ludomagno@google.com>