Bump truffle-keystore-provider to 1.0.6

[yondonfu]

What does this pull request do? Explain your changes. (required)

This PR bumps the truffle-keystore-provider dependency to v1.0.6.

truffle-keystore-provider v1.0.6 contains this commit which fixes an issue that was preventing the usage of truffle-keystore-provider to deploy contracts using a remote ETH RPC provider while signing transactions locally using an unlocked keystore.

Specific updates (required)

See commit history.

How did you test each of these updates (required)

Tested manually by deploying a contract to Rinkeby via npm run migrate -- --network=rinkeby -f <MIGRATION_FILE_#>

Checklist:

• [ ] README and other documentation updated
• [x] All tests using npm run test pass

[coveralls]

Pull Request Test Coverage Report for Build c8a23826-5999-4e85-8d64-56434bf7d789

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build e542009f-aa14-4c12-916c-f641c956dfc8:	0.0%
Covered Lines:	715
Relevant Lines:	715

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💛 - Coveralls