Fix copyrights

[TolisChal]

This PR fixes/updates the copyrights in the source code files.
Fixes this failed test: https://github.com/qiskit-community/qiskit-optimization/actions/runs/12596718193/job/35108371050

The test failed after merging #634 which developed in 2024.

[t-imamichi]

We update the copyright year when files are updated. check_copyright.py takes care of it automatically. So, you don't need to update all files manually.

[TolisChal]

We update the copyright year when files are updated. check_copyright.py takes care of it automatically. So, you don't need to update all files manually.

I used exactly that script to update them.

[woodsp-ibm]

I am guessing this is to sort out the dates after #634 got merged this year just a short time ago, that PR being created and last updated, from the looks, last year. So while the dates would have passed and been correct had it been done in 2024 the fact it spilled over to this new year before it was merged I figure is the reason for this.

[TolisChal]

I am guessing this is to sort out the dates after #634 got merged this year just a short time ago, that PR being created and last updated, from the looks, last year. So while the dates would have passed and been correct had it been done in 2024 the fact it spilled over to this new year before it was merged I figure is the reason for this.

Yes, exactly. After merging #634 the test for the copyrights failed. This PR fixes that failure.
I updated the description of this PR as well to be clear what it fixes.

[t-imamichi]

Thanks, Steve. I got it.