Bump fastecdsa from 1.6.4 to 2.1.2

[dependabot[bot]]

Bumps fastecdsa from 1.6.4 to 2.1.2.

Changelog

Sourced from fastecdsa's changelog.

[2.1.2]

Fixed

• Point at infinity handling in C extensions (issue #52)
• DER signature decoding that assumed length was always encoded in one byte

[2.1.1]

Fixed

• RFC6979 nonce generation for signatures on pre-hashed messages (issue #46)

[2.1.0]

Added

• Curves W25519 and W448 from NIST.SP.800-186

Fixed

• Curves with no OID are not added to the lookup by OID map
• Type validation for operations of points (issue #50)

[2.0.0]

Added

• This changelog
• Type hints for clearer function signatures

Removed

• Support for python2.x
• Support for python3.4 and older
• Various unused imports

Fixed

• Issue with benchmark script when C extensions weren't built in place (issue #44)

Commits

• 7b64e3e Update docs to v2.1.2
• 8971a6b skip tests if python version does not include sha3 hashes
• 1e7b5f8 Remove f-strings for py3.5 compat
• e592f10 Properly handle the point at infinity
• 3491974 Fix error parsing length in DER signature decoding
• 4f116f1 Add test vectors from whycheproof project for ecdsa verification
• f1d463b Update to v2.1.1
• 59a6e13 Fix docs for the compressed / uncompressed in SEC1 docs
• 6f2f9d4 Fix the Travis CI badge
• e8a25d7 Merge branch 'fix/46-der-encoding-issues'
• Additional commits viewable in compare view

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