Adjust blocks per year parameter to match block times

Proposal Details The Stargaze network is producing blocks slower than the initial estimate of 5.5 seconds per block that was set at genesis. The original calculation was to mint 1B STARS over 5,737,588 blocks/year at 5.5sec/block. The current network performance is ~6.05sec/block. This proposal is to adjust the blocks per year parameter to be in line with the 6.05sec block time. This block time wascalculated over the last 100,000 blocks. This will equate to an approximate 10.14% increase in STARS minted per block to help the network achieve the goal of minting 1B STARS in year 1. This proposal has the backing of the Stargaze team.

More information is available to review at https://commonwealth.im/stargaze/discussion/3784-proposal-to-decrease-the-blocks-per-year-parameter