chore(deps): bump black from 25.1.0 to 26.3.1 in /requirements (#1457)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements/tools.txt

@@ -1,3 +1,3 @@
 mypy==1.19.1
 flake8==7.3.0
-black==25.1.0
+black==26.3.1