python-cryptography: bump to version 3.4.7

python-cryptography: bump to version 3.4.7

Dropped patches:
  0004-Replace-EVP_CIPHER_CTX_cleanup-with-EVP_CIPHER_CTX_r.patch
  0005-Switch-get_-Update-APIs-to-get0.patch

Reworked patches:
  0001-Add-new-ASN1_STRING_get0_data-API.patch
  0006-Add-X509_STORE_CTX_trusted_stack-compatibility-macro.patch
These 2 require that we keep only the CUSTOMIZATIONS stuff for now. Maybe
later we can drop this.

Ran 'make package/python-cryptography/refresh'.

Added patch:
  0004-disable-rust.patch
upstream did a sloppy job with the CRYPTOGRAPHY_DONT_BUILD_RUST logic; we
need to patch it, to make sure the setuptools-rust isn't installed.
We may need to carry this patch in our tree for a bit longer than upstream,
because in newer versions, CRYPTOGRAPHY_DONT_BUILD_RUST logic gets removed.

Signed-off-by: Alexandru Ardelean <redacted>