Bump ecdsa from 0.13 to 0.13.3 in /requirements

Bumps [ecdsa](https://github.com/warner/python-ecdsa) from 0.13 to 0.13.3.
- [Release notes](https://github.com/warner/python-ecdsa/releases)
- [Changelog](https://github.com/warner/python-ecdsa/blob/master/NEWS)
- [Commits](tlsfuzzer/python-ecdsa@python-ecdsa-0.13...python-ecdsa-0.13.3)

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

requirements/auto_generated_requirements.txt

@@ -30,7 +30,7 @@ django-versionfield3==0.1.8
 django==2.2
 djangorestframework==3.7.7
 docutils==0.14
-ecdsa==0.13
+ecdsa==0.13.3
 funcsigs==1.0.2
 funcy==1.12
 furl==0.4.93
@@ -91,7 +91,7 @@ docker-pycreds==0.4.0
 docker==3.7.2
 docutils==0.14
 ebs-deploy==2.0.1
-ecdsa==0.13
+ecdsa==0.13.3
 factory-boy==2.8.1
 faker==1.0.5
 freezegun==0.3.7

requirements/base.txt

@@ -31,7 +31,7 @@ django-bootstrap3
 protobuf
 protobuf-to-dict==0.1.0
 django-dynamic-preferences==0.8.1
-ecdsa==0.13
+ecdsa==0.13.3
 google-cloud
 django-tinymce==2.6.0
 python-magic==0.4.15