Contract deployment error: ProviderError: transaction underpriced

[jcortejoso]

Describe the bug

I suffer this error during a deployment to polygon:

AaveCollateralDepositCondition: 0x4A01a13d1CF1DB482f5c5873095Fa2C76B086C82
ProviderError: transaction underpriced
    at HttpProvider.request (/Users/jcortejoso/Projects/nevermined/contracts/node_modules/hardhat/src/internal/core/providers/http.ts:78:19)
    at HDWalletProvider.request (/Users/jcortejoso/Projects/nevermined/contracts/node_modules/hardhat/src/internal/core/providers/accounts.ts:182:36)
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)
    at EthersProviderWrapper.send (/Users/jcortejoso/Projects/nevermined/contracts/node_modules/@nomiclabs/hardhat-ethers/src/internal/ethers-provider-wrapper.ts:13:20)

Rerunning yarn deploy:matic continued the deployment process from cache without issue.

To Reproduce

Steps to reproduce the behavior:

1. The error seems to randomly happen during deployment (polygon mainnet at least)

Expected behavior

TX can have a correct gasPrice.

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Additional context

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