fix: timezone test fixes for local setup

[hrishabhg]

Description

In local, the timezone tests fail for format like X. X formats the timezone diff. If the timezone difference is 0530, X return 05 , XX return 0530. Hence, it is required that the timezone tests take care of that.

Testing done

Describe the testing strategy. Unit and integration tests are expected for any behavior changes.

Reviewer checklist

• Ensure docs are updated if necessary. (eg. if a user visible feature is being added or changed).
• Ensure relevant issues are linked (description should include text like "Fixes #")
• Do these changes have compatibility implications for rollback? If so, ensure that the ksql command version is bumped.

[confluent-cla-assistant]

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