Werk #14203: Slightly improved checker performance

Component	Checks & agents
Title	Slightly improved checker performance
Date	Jun 27, 2023
Level	Trivial Change
Class	New Feature
Compatibility	Compatible - no manual interaction needed
Checkmk versions & editions	2.3.0b1 Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.2.0p5 Checkmk Pro, Checkmk Ultimate, Checkmk Ultimate MT 2.1.0p30 Checkmk Pro, Checkmk Ultimate MT

Two improvements have been made.

• Improved parsing speed of raw TCP agent output
• Fixed unnecessary deepcopy/duplication of parsed data

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