Adjust Caffeine extension description to drop Java 8 mention #49070

Job	Run time
Attach pull request number	3s
CI Sanity Check	31s
Initial JDK 17 Build	8m 2s
Calculate Test Jobs	8s
Maven Tests - JDK 17	1m 43s
JVM Tests - JDK 17	1h 23m 18s
Maven Tests - JDK 17 Windows	11m 15s
JVM Tests - JDK 21	1h 21m 21s
JVM Tests - JDK 17 Windows	1h 8m 25s
Gradle Tests - JDK 17	1m 18s
Devtools Tests - JDK ${{ matrix.java.name }}	0s
Kubernetes Tests - JDK 17	7m 45s
Gradle Tests - JDK 17 Windows	3m 28s
Kubernetes Tests - JDK 21	8m 5s
Quickstarts Compilation - JDK 17	6m 5s
Kubernetes Tests - JDK 17 Windows	3m 14s
Native Tests - Main	1m 41s
Native Tests - Virtual Thread - Main	6m 43s
Native Tests - Data1	31m 50s
MicroProfile TCKs Tests	0s
Native Tests - Virtual Thread - Messaging	4m 38s
Native Tests - Data2	29m 19s
Native Tests - Data3	17m 43s
Native Tests - Data4	6m 16s
Native Tests - Data5	15m 26s
Native Tests - Data6	19m 57s
Native Tests - Data7	24m 56s
Native Tests - Messaging1	10m 15s
Native Tests - Security3	5m 17s
Native Tests - Cache	17m 46s
Native Tests - HTTP	5m 24s
Native Tests - Misc1	5m 51s
Native Tests - Misc2	9m 3s
Native Tests - Misc3	8m 20s
Native Tests - Misc4	30m 38s
Native Tests - Spring	12m 29s
Native Tests - gRPC	4m 34s
Native Tests - Windows support	7m 31s
Upload build stats to collector	0s
Build report	34s
	9h 20m 52s

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