bionic-amd64-tf-m-build: Update requirements_python3.txt

Updates the cryptography and imgtool Python3 packages to the latest
versions requested in TF-M requirements.txt. Also changes cbor package
to cbor2, which is now needed by imgtool, and was previously changed in
TF-M requirements.txt.

Updates the cysecuretools package to 4.1.0 to permit a newer version of
the cryptography package and resolves cysecuretools' other dependency
versions.

Signed-off-by: Jamie Fox <jamie.fox@arm.com>
Change-Id: Ic984f737894fc14718a7f7578a47b6ccf6368d59
1 file changed