Update Kotlin to version 2.1.0 #400

Job	Run time
CI Sanity Check	32s
Attach pull request number	0s
Initial JDK 17 Build	12m 20s
Calculate Test Jobs	10s
Maven Tests - JDK 17	40m 52s
Devtools Tests - JDK 17	12m 17s
Maven Tests - JDK 17 Windows	40m 52s
Devtools Tests - JDK 21	13m 33s
Gradle Tests - JDK 17	31m 51s
Devtools Tests - JDK 17 Windows	20m 8s
JVM Tests - JDK ${{ matrix.java.name }}	0s
Gradle Tests - JDK 17 Windows	40m 55s
Kubernetes Tests - JDK 17	17m 33s
Kubernetes Tests - JDK 21	17m 8s
Kubernetes Tests - JDK 17 Windows	19m 8s
Native Tests - Virtual Thread - Main	28m 19s
Native Tests - Virtual Thread - Messaging	10m 39s
Native Tests - Virtual Thread - Security	3m 33s
Quickstarts Compilation - JDK ${{ matrix.java.name }}	0s
Native Tests - Main	6m 56s
Native Tests - Data1	33m 10s
MicroProfile TCKs Tests	0s
Native Tests - Data2	27m 38s
Native Tests - Data3	23m 29s
Native Tests - Data4	25m 21s
Native Tests - Data5	20m 50s
Native Tests - Data6	28m 30s
Native Tests - Data7	30m 6s
Native Tests - Amazon	15m 16s
Native Tests - Messaging1	27m 11s
Native Tests - Messaging2	14m 11s
Native Tests - Security1	23m 30s
Native Tests - Security2	21m 34s
Native Tests - Security3	12m 45s
Native Tests - Cache	17m 44s
Native Tests - HTTP	17m 15s
Native Tests - Misc1	15m 25s
Native Tests - Misc2	13m 7s
Native Tests - Misc3	11m 11s
Native Tests - Misc4	8m 37s
Native Tests - Spring	7m 34s
Native Tests - gRPC	2m 7s
Native Tests - Windows support	1s
Native Tests - DevTools Integration Tests	1s
Native Tests - AWT, ImageIO and Java2D, Packaging .so files	1s
Upload build stats to collector	1s
Build report	1m 5s
	11h 54m 26s

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