Release v0.2.0

What's Changed

• Add sign challenge task by @dufkan in #13
• Fix pipeline by @KristianMika in #14
• Update hyper version by @KristianMika in #15
• Add TLS-based client authentication by @dufkan in #16
• fix: pass correct data to protocol in SignPDF by @dufkan in #17
• chore: publish a docker image on every push into main by @KristianMika in #18
• Adapt to merged API for optional client auth in tonic by @dufkan in #21
• chore: change tonic source to upstream by @dufkan in #23
• chore(deps): bump tokio from 1.22.0 to 1.24.2 by @dependabot in #20
• chore(deps): bump openssl from 0.10.43 to 0.10.48 by @dependabot in #22
• chore(deps): bump h2 from 0.3.15 to 0.3.17 by @dependabot in #24
• ci: use devel branch for nightly docker release by @KristianMika in #25
• docs: update key folder in Docker command in readme by @KristianMika in #27
• chore(deps): bump openssl from 0.10.48 to 0.10.55 by @dependabot in #26
• Add FROST and threshold ElGamal decryption support by @dufkan in #28

Full Changelog: v0.1.1...v0.2.0