security/py-netbox-secretstore: Backport patches and deprecate

• Backport a patch of the upstream repository that fixes an issue with bulk updates for M2M (= many-to-many) operations.

• Add patches from the py-netbox-secrets repository as well which are required to migrate to the py-netbox-secrets plugin.

• Also give some advice how to migrate to the py-netbox-secrets plugin.

• Deprecate and set and an expiration date because upstream no longer maintains py-netbox-secretstore which is in its current state not compatible with newer releases of NetBox.

• Bump PORTREVISION due package change and to give users a heads-up that the plugin is deprecated.

MFH: 2023Q2 (in 3 weeks)
(cherry picked from commit 53edd11f9dac25ba3053108406373e6a0550f551)