chore(master): release 2.6.0

[slo-generator-bot]

:robot: I have created a release beep boop

2.6.0 (2024-02-16)

Features

• add Error Budget Consumed Ratio metric to reports and BigQuery exporter (#416) (3b1f636)

Bug Fixes

• ci: pin safety to v2 as v3 causes unit tests to fail (#423) (5b44bad)
• deps: bump version of pip to avoid known CVE (#397) (b1edb12)
• open_search: change the way range is added to filters (#400) (c221464)

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[slo-generator-bot]

:robot: Release is at https://github.com/google/slo-generator/releases/tag/v2.6.0 :sunflower: