Make javalinVersion a global variable #3062

Job	Run time
photonclient-build	1m 8s
Build Examples	4m 35s
photon-build-all	4m 9s
photonclient-check-lint	29s
Photonlib - Build Docker - Athena	8m 55s
Photonlib - Build Host - Win64	8m 58s
Photonlib - Build Docker - Raspbian	10m 34s
Photonlib - Build Host - Linux	4m 43s
photonserver-build-offline-docs	1m 24s
photonserver-check-lint	49s
Photonlib - Build Docker - Aarch64	9m 53s
wpiformat	19s
Build fat JAR - Win64	3m 40s
Build fat JAR - macOS	2m 13s
Build fat JAR - Linux	2m 3s
Build fat JAR - macOSArm	1m 58s
Build fat JAR - LinuxArm32	1m 40s
Build fat JAR - LinuxArm64	2m 0s
Build image - ${{ matrix.image_url }}	0s
photon-release	0s
	1h 9m 30s

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