fix: update packet forward middleware

[faddat]

Description

This PR upgrades packet forward middleware to its latest release, fixing a bug.

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Closes #XXX

All items are required. Please add a note to the item if the item is not applicable and
please add links to any relevant follow-up issues.

PR review checkboxes:

I have...

• Added a relevant changelog entry to the Unreleased section in CHANGELOG.md
• Targeted PR against the correct branch
• included the correct type prefix in the PR title
• Linked to the GitHub issue with discussion and accepted design
• Targets only one GitHub issue
• Wrote unit and integration tests
• Wrote relevant migration scripts if necessary
• All CI checks have passed
• Added relevant godoc comments
• Updated the scripts for local run, e.g genesis_config_commands.sh if the PR changes parameters
• Add an issue in the e2e-tests repo if necessary

SDK Checklist

• Import/Export Genesis
• Registered Invariants
• Registered Events
• Updated openapi.yaml
• No usage of go map
• No usage of time.Now()
• Used fixed point arithmetic and not float arithmetic
• Avoid panicking in Begin/End block as much as possible
• No unexpected math Overflow
• Used sendCoin and not SendCoins
• Out-of-block compute is bounded
• No serialized ID at the end of store keys
• UInt to byte conversion should use BigEndian

Full security checklist here

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For Reviewer:

• Confirmed the correct type prefix in the PR title
• Reviewers assigned
• Confirmed all author checklist items have been addressed

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After reviewer approval:

• In case the PR targets the main branch, PR should not be squash merge in order to keep meaningful git history.
• In case the PR targets a release branch, PR must be rebased.

[mtsitrin]

@faddat can't find this commit /tag on the repo
why not using the tagged v6.1.1?

[faddat]

We have a slack channel set up and it's probably best to discuss this there.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 30.52%. Comparing base (70aa5b6) to head (04cf086).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #678   +/-   ##
=======================================
  Coverage   30.52%   30.52%           
=======================================
  Files         226      226           
  Lines       31993    31993           
=======================================
  Hits         9765     9765           
  Misses      20669    20669           
  Partials     1559     1559           

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