Update heatingcontrol to 2.12.8

[rg-engineering]

Please update my adapter ioBroker.heatingcontrol to version 2.12.8.

This pull request was created by https://www.iobroker.dev c0726ff.

[github-actions[bot]]

Automated adapter checker

ioBroker.heatingcontrol

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:thumbsup: No errors found

• [ ] :eyes: [W156] Adapter should support admin 5 UI (jsonConfig) if you do not use a React based UI
• [ ] :eyes: [W184] "common.materialize" is deprecated for admin >= 5 at io-package.json. Please use property "adminUI".

Adapter releases: https://www.iobroker.dev/adapter/heatingcontrol/releases Adapter statistic: https://www.iobroker.dev/adapter/heatingcontrol/statistics

History and usage information for release 2.12.8:

2.12.8 created 5.6.2024 (10 days old) 185 users (7.36%)

2.12.5 (stable) created 1.3.2024 (106 days old) 1340 users (stable) (53.28%)

Please verify that this PR really tries to update to release 2.12.8!

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