Prop 7: Software Upgrade Proposal for unblocking transfers to airdrop module account and updating the airdrop time period

Summary
This Software Upgrade Proposal includes the following changes
- Unblocking ecosystem airdrop module account to receive funds from airdrop multisig address
- Update airdrop start and end time

### Unblock ecosystem airdrop module account
Unblock ecosystem airdrop module account to receive funds from airdrop multisig address.
Ecosystem airdrop module account: gitopia1e385ct9padxt2ylzen884kr79genlq8la04sy4
Airdrop multisig address: gitopia1jt78ze9c89lq43vkv2msf4vue3am07dfr9nglj

### Update airdrop time
Update airdrop time to the below times.
Start: Sept 21st 15:00 UTC
End: Nov 21st 15:00 UTC

## Release binaries
gitopiad v3.1.0

## Upgrade time
The upgrade height is 6,334,048, which is approximately around September 21st, 18:30

## Governance Voting Options
Below are the choices available for voting on this proposal and their corresponding implications:
- Vote YES: By voting YES, you express your support for the software upgrade.
- Vote NO: A NO vote signifies your disagreement with the proposed software upgrade.
- Vote NO WITH VETO: Voting NO WITH VETO indicates that you view the proposal as irrelevant to Gitopia, a potential infringement on minority interests, or as a proposal that either violates or encourages the violation of the rules of engagement as defined by Gitopia. If votes cast under this option exceed a third of the total votes, the proposal will be rejected and all deposits will be burned.
- Vote ABSTAIN: By voting ABSTAIN, you are participating in achieving quorum while formally choosing not to express an opinion in favor or against the proposal.