Update tsconfig.json - add packages/contracts

[qq7]

without this line, running gsn deploy fails with Error: Cannot find module '@opengsn/contracts/types/ethers-contracts'
closes #1006

[forshtat]

without this line, running gsn deploy fails with Error: Cannot find module '@opengsn/contracts/types/ethers-contracts' closes #1006

Unfortunately it appears that truffle is not able to install the solidity compiler any more, and given that truffle has been deprecated it is likely more things will break as well. So unless you can also fix this issue, merging this PR will not be useful until the migration to current frameworks is complete (#1012).

[qq7]

@forshtat

Unfortunately it appears that truffle is not able to install the solidity compiler any more

Ahh, I didn't check with 0.8.7... It compiled fine on my machine when I bumped solc version to 0.8.15. Let's give it a go on CircleCI...

[qq7]

This time it has worked. Might also make sense to bump solc version in paymasters package.