Bump to v3.2.0

Github action path for folder structure

Set alpine version to 3.12.3 (openethereum#231)

Alpine version is changed in order to prevent Cmake errors. Reference: https://gitlab.alpinelinux.org/alpine/aports/-/issues/12321.

Intends to solve openethereum#230

Co-authored-by: Denis Granha <[email protected]>

cicd fix v2

Add docker deployment for Github actions

revert actions/cache to version 1.1.2 (openethereum#80)

Update jsonrpc to 15.0.0, bump to 2.5.14

Add 3.0.0 changelog (#11690)

Update version to 3.0.0-alpha.1 (#11592)