Update to Mutiny 2.6.0 and Reactive Messaging 4.20.0 #39352

Job	Run time
Attach pull request number	4s
CI Sanity Check	32s
Initial JDK 17 Build	22m 48s
Calculate Test Jobs	11s
JVM Tests - JDK 17	4h 27m 59s
JVM Tests - JDK 21	4h 25m 34s
Kubernetes Tests - JDK 17	13m 23s
Gradle Tests - JDK 17	25m 42s
Kubernetes Tests - JDK 21	12m 19s
JVM Tests - JDK 17 Windows	4h 16m 4s
Devtools Tests - JDK 17	12m 10s
Gradle Tests - JDK 17 Windows	52m 49s
Kubernetes Tests - JDK 17 Windows	17m 15s
Devtools Tests - JDK 21	12m 20s
Devtools Tests - JDK 17 Windows	18m 2s
Maven Tests - JDK 17	1h 1m 28s
MicroProfile TCKs Tests	59m 31s
Maven Tests - JDK 17 Windows	1h 13m 32s
Native Tests - Virtual Thread - Main	23m 19s
Quickstarts Compilation - JDK 17	6m 35s
Native Tests - Virtual Thread - Messaging	10m 10s
Native Tests - Main	10m 50s
Native Tests - Data1	44m 49s
Native Tests - Data2	34m 32s
Native Tests - Data3	27m 1s
Native Tests - Data4	21m 59s
Native Tests - Data5	23m 56s
Native Tests - Data6	39m 43s
Native Tests - Data7	40m 14s
Native Tests - Amazon	19m 8s
Native Tests - Messaging1	47m 22s
Native Tests - Messaging2	25m 18s
Native Tests - Security1	32m 32s
Native Tests - Security2	40m 28s
Native Tests - Security3	18m 40s
Native Tests - Cache	17m 58s
Native Tests - HTTP	49m 8s
Native Tests - Misc1	32m 35s
Native Tests - Misc2	25m 57s
Native Tests - Misc3	33m 51s
Native Tests - Misc4	48m 38s
Native Tests - Spring	24m 59s
Native Tests - gRPC	21m 1s
Native Tests - Windows - RESTEasy Jackson	8m 1s
Native Tests - DevTools Integration Tests	6m 9s
Native Tests - AWT, ImageIO and Java2D	11m 22s
Build report	51s
	1d 7h 58m 49s

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