Bump external/gt4py from `36c487a` to `25046c8`

[dependabot[bot]]

Bumps external/gt4py from 36c487a to 25046c8.

Commits

• 25046c8 Update license year to 2023 (#1165)
• 86bc2e1 Imperative Backend Bugfix (Init Conditional Problem) (#1156)
• f2b470b Adapt CI to ci-ext (#1153)
• b01599d CI: inverse workflows for branch protection (#1160)
• 891f20c Add logo to README (#1161)
• c989d8c Rename jobs in GitHub CI workflows (#1157)
• 4be34ec Feature/literal parametrized dtype (#1139)
• 820a8f6 Merge pull request #1150 from GridTools/merge-functional
• 60f98aa Fix Github CI after merging functional
• b5d6c35 Fix tox issues after merging functional
• Additional commits viewable in compare view

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[ofuhrer]

Can one of the admins verify this patch?

[dependabot[bot]]

Superseded by #428.