Upgrade terraform-provider-splunk to v1.4.24

[pulumi-bot]

This PR was generated via $ upgrade-provider pulumi/pulumi-splunk --kind=all --target-bridge-version=latest.

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• Upgrading terraform-provider-splunk from 1.4.22 to 1.4.24. Fixes #400

[github-actions[bot]]

Does the PR have any schema changes?

Looking good! No breaking changes found. No new resources/functions.

Maintainer note: consult the runbook for dealing with any breaking changes.