Update philips_324131092621 action mapping for Zigbee2MQTT.

[kkevindev]

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Proposed change*

Updated action mapping for the Philips Hue Dimmer as per bug reported EPMatt#607 and PR EPMatt#542 in the original repo.

Checklist*

• I followed sections of the Contribution Guidelines relevant to changes I'm proposing.
• I properly tested proposed changes on my system and confirm that they are working as expected.
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[LewisSpring]

Looks good to me.
Older comments say they've tested so happy to merge