Fix failing string `repr` tests

[joeycarter]

Context: Core PennyLane changed the string representation for some operators: https://github.com/PennyLaneAI/pennylane/pull/6493. For example "Adjoint(S(wires=[0]) + T(wires=[0]))" -> "Adjoint(S(0) + T(0))". Catalyst contains a few tests that check these string representations, so these tests need to be updated.

Description of the Change: Update string representations for all failing tests.

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[joeycarter]

Thanks you so much @joeycarter, sorry for the trouble

No worries!

[mudit2812]

Once https://github.com/PennyLaneAI/pennylane/pull/6499 is merged into PL, you should be able to update .dep-versions with the merge commit SHA, which should fix the failures.

[joeycarter]

Once PennyLaneAI/pennylane#6499 is merged into PL, you should be able to update .dep-versions with the merge commit SHA, which should fix the failures.

For the Catalyst RC branch, we install PL directly from the v0.39.0-rc0 branch on GitHub, so hopefully once that PR is merged we can rerun the RC/RC/RC and it will work without having to change .dep-versions.

If the RC/RC/RC build passes after merging in the revert commit, the we can close this PR without merging.

[joeycarter]

The CPL rc/rc/rc build is now passing after reverting the PR in PennyLane that changed the string representation, so this PR is no longer needed. Closing.