fix(libzkp): upgrade libzkp to v0.9.4

[silathdiir]

Purpose or design rationale of this PR

Could reference this notion page for details.

PR title

Your PR title must follow conventional commits (as we are doing squash merge for each PR), so it must start with one of the following types:

• build: Changes that affect the build system or external dependencies (example scopes: yarn, eslint, typescript)
• ci: Changes to our CI configuration files and scripts (example scopes: vercel, github, cypress)
• docs: Documentation-only changes
• feat: A new feature
• fix: A bug fix
• perf: A code change that improves performance
• refactor: A code change that doesn't fix a bug, or add a feature, or improves performance
• style: Changes that do not affect the meaning of the code (white-space, formatting, missing semi-colons, etc)
• test: Adding missing tests or correcting existing tests

Deployment tag versioning

Has tag in common/version.go been updated or have you added bump-version label to this PR?

• No, this PR doesn't involve a new deployment, git tag, docker image tag
• Yes

Breaking change label

Does this PR have the breaking-change label?

• No, this PR is not a breaking change
• Yes

[codecov]

Codecov Report

Merging #973 (1863ea1) into develop (76d66eb) will not change coverage.
The diff coverage is n/a.

❗ Current head 1863ea1 differs from pull request most recent head 62d5e1f. Consider uploading reports for the commit 62d5e1f to get more accurate results

@@           Coverage Diff            @@
##           develop     #973   +/-   ##
========================================
  Coverage    48.18%   48.18%           
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  Files          100      100           
  Lines        10579    10579           
========================================
  Hits          5098     5098           
  Misses        5060     5060           
  Partials       421      421           

Flag	Coverage Δ
common	54.56% <ø> (ø)
coordinator	18.94% <ø> (ø)
database	42.85% <ø> (ø)
rollup	66.54% <ø> (ø)

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[silathdiir]

test_zkp could pass.