[stubsabot] Bump hdbcli to 2.26.*

[github-actions[bot]]

Release: https://pypi.org/pypi/hdbcli/2.26.26 Homepage: https://www.sap.com/ Typeshed stubs: https://github.com/python/typeshed/tree/main/stubs/hdbcli

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• Fix stubtest failures in another PR, then close this PR

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[donbarbos]

Docs for 2.26: https://help.sap.com/docs/SAP_HANA_CLIENT/f1b440ded6144a54ada97ff95dac7adf/f3b8fabf34324302b123297cdbe710f0.html?version=2.26 Docs for 2.25: https://help.sap.com/docs/SAP_HANA_CLIENT/f1b440ded6144a54ada97ff95dac7adf/f3b8fabf34324302b123297cdbe710f0.html?version=2.25