bump subxt(0.32.1)

What's Changed

• Re merge dev by @zianksm in #47
• Fix hash from h256 by @ramandabhijana in #51
• bump to 0.2.1 by @zianksm in #52
• Feat/bump-subxt by @zianksm in #53

Full Changelog: v0.2.0...v0.2.2