[FIX] Fix go.mod dependencies to match Injective core v1.18.0

[aarmoa]

Fix go.mod dependencies to match Injective core v1.18.0

[Copilot]

Pull request overview

Updates this repo’s Go module replacement pins to align with Injective core v1.18.0 by bumping Injective fork versions for Cosmos SDK and Go-Ethereum.

Changes:

• Bump github.com/InjectiveLabs/cosmos-sdk (and submodules used via cosmossdk.io/* replaces) from v0.50.14-inj to v0.50.14-inj.4.
• Bump github.com/InjectiveLabs/go-ethereum from v1.16.3-inj to v1.16.3-inj.2.
• Update go.sum entries to match the new replaced module versions and checksums.

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated 2 comments.

File	Description
go.mod	Updates replace directives to newer Injective fork versions for Cosmos SDK modules and Go-Ethereum.
go.sum	Refreshes sums for the updated Injective fork module versions.

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[Copilot]

replace github.com/cosmos/cosmos-sdk => ... v0.50.14-inj.4 now points at a newer fork than the require github.com/cosmos/cosmos-sdk v0.50.12 version earlier in the file. Even though the replace will override the code for this module, leaving require behind can be confusing and can cause downstream consumers (who don't apply this module's replace directives) to resolve an unexpected SDK version. Consider updating the require version to the matching upstream tag (e.g., v0.50.14) or otherwise documenting/enforcing the expected fork/version.

Suggested change

	github.com/cometbft/cometbft/api => github.com/InjectiveLabs/cometbft/api v1.0.0-inj.2
	github.com/cometbft/cometbft/api => github.com/InjectiveLabs/cometbft/api v1.0.0-inj.2
	// NOTE: This module is built and tested against the InjectiveLabs fork of
	// github.com/cosmos/cosmos-sdk at v0.50.14-inj.4 (tracking upstream v0.50.14).
	// Downstream consumers should either pin the same upstream version or add
	// an equivalent replace directive to ensure they use a compatible SDK.

[Copilot]

Similar to cosmos-sdk, this replace github.com/ethereum/go-ethereum => ... v1.16.3-inj.2 is ahead of the require github.com/ethereum/go-ethereum v1.15.7 declared earlier. To keep the module metadata aligned (and reduce surprises for consumers that won't see these replaces), consider bumping the require version to v1.16.3 as well.