Fix year in ilamb template

[forsyth2]

Summary

Objectives:

• Fix year bug mentioned at https://github.com/E3SM-Project/zppy/pull/702/files#r2027943340.

Select one: This pull request is...

• a bug fix: increment the patch version
• a small improvement: increment the minor version
• a new feature: increment the minor version
• an incompatible (non-backwards compatible) API change: increment the major version

Small Change

• To merge, I will use "Squash and merge". That is, this change should be a single commit.
• Logic: I have visually inspected the entire pull request myself.
• Pre-commit checks: All the pre-commits checks have passed.

[forsyth2]

This fix was pre-approved by @chengzhuzhang in https://github.com/E3SM-Project/zppy/pull/702/files#r2027972557 + adding this change manually to the integration test resulted in a successful run (#634 (reply in thread)). Merging.