eth-lib dependency updated

[nivida]

Description

This PR does define the eth-lib dependency as a dynamic version starting from 0.2.8.

Type of change

• Dependencies

Checklist:

• I have selected the correct base branch.
• I have performed a self-review of my own code.
• I have commented my code, particularly in hard-to-understand areas.
• I have made corresponding changes to the documentation.
• My changes generate no new warnings.
• Any dependent changes have been merged and published in downstream modules.
• I ran npm run dtslint with success and extended the tests and types if necessary.
• I ran npm run test:unit with success and extended the tests if necessary.
• I ran npm run build-all and tested the resulting file/'s from dist folder in a browser.
• I have updated the CHANGELOG.md file in the root folder.
• I have tested my code on the live network.

[coveralls]

Coverage remained the same at 84.485% when pulling 59967b5 on dependencies/updating-of-eth-lib into e914ec3 on 1.x.

[nivida]

@cgewecke I've merged this PR which does define a dynamic version for the eth-lib dependency in the package.json of the web3-eth-accountspackage. This because eth-lib is managed by Everton from the EF JS Team which web3.js is a part of. Sorry for all the notifications you got for this PR.