[CALCITE-6845] Self-host website images #755

Job	Run time
Linux (JDK 8), Avatica main	14m 22s
Linux (JDK 8)	4m 26s
Windows (JDK 11)	5m 53s
Linux (JDK 11), Middle-Aged Guava	4m 5s
Linux (JDK 11), Calcite Minimum Guava, America/New_York Timezone	4m 4s
Linux (JDK 11), Newest Guava	4m 3s
Linux (JDK 11), Oldest Guava, Pacific/Chatham Timezone	4m 7s
Linux (JDK 17)	4m 15s
Linux (JDK 21)	4m 5s
Linux (JDK 23)	4m 6s
macOS (JDK 21)	4m 52s
	58m 18s

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