hotfix: set correct deposit flag in flagset for addpkg

[zivkovicmilos]

Description

This PR fixes a single incorrectly set flag for maketx addpkg.
I've scanned over all of the other commands and subcommands, this is the single flag that was not set properly.

Changes include

• Bugfix (non-breaking change that solves an issue)
• Hotfix (change that solves an urgent issue, and requires immediate attention)
• New feature (non-breaking change that adds functionality)
• Breaking change (change that is not backwards-compatible and/or changes current functionality)

Checklist (for contributors)

• I have assigned this PR to myself
• I have added at least 1 reviewer
• I have added the relevant labels
• I have updated the official documentation
• I have added sufficient documentation in code

Testing

• I have tested this code with the official test suite
• I have tested this code manually

Manual tests

Manually executed a maketx addpkg command that made sure deposit was set, ex:

./build/gnokey maketx addpkg \
--pkgpath "gno.land/p/demo/stack" \
--pkgdir "examples/gno.land/p/demo/stack" \
--deposit 100000000ugnot \
--gas-fee 1000000ugnot \
--gas-wanted 2000000 \
--broadcast \
--chainid dev \
--remote localhost:26657 \
UserKey

Additional Comments

Noticed while executing command from #576