Bump fastecdsa from 1.7.2 to 2.1.2 in /committee

Bumps [fastecdsa](https://github.com/AntonKueltz/fastecdsa) from 1.7.2 to 2.1.2.
- [Release notes](https://github.com/AntonKueltz/fastecdsa/releases)
- [Changelog](https://github.com/AntonKueltz/fastecdsa/blob/master/CHANGELOG.md)
- [Commits](AntonKueltz/fastecdsa@v1.7.2...v2.1.2)

---
updated-dependencies:
- dependency-name: fastecdsa
  dependency-type: direct:production
...

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

Author: dependabot[bot]

committee/setup.py

@@ -7,7 +7,7 @@
     install_requires=[
         'aerospike==4.0.0',
         'aioredis==1.2.0',
-        'fastecdsa==1.7.2',
+        'fastecdsa==2.1.2',
         'marshmallow-dataclass==7.1.0',
         'marshmallow==3.2.1',
         'PyYAML==5.1',