Bump ecdsa from 0.16.1 to 0.17.0

Bumps [ecdsa](https://github.com/tlsfuzzer/python-ecdsa) from 0.16.1 to 0.17.0.
- [Release notes](https://github.com/tlsfuzzer/python-ecdsa/releases)
- [Changelog](https://github.com/tlsfuzzer/python-ecdsa/blob/master/NEWS)
- [Commits](tlsfuzzer/python-ecdsa@python-ecdsa-0.16.1...python-ecdsa-0.17.0)

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -11,7 +11,7 @@ colorama==0.4.4
 cornice==5.2.0
 cornice-swagger==1.0.0
 dockerflow==2020.10.0
-ecdsa==0.16.1
+ecdsa==0.17.0
 hupper==1.10.3
 idna==2.10
 iso8601==0.1.14