Make javalinVersion a global variable #3058

Job	Run time
photon-build-all	4m 20s
Build Examples	3m 45s
photonclient-build	1m 6s
photonclient-check-lint	30s
Photonlib - Build Docker - Athena	10m 2s
Photonlib - Build Host - Win64	8m 45s
Photonlib - Build Docker - Raspbian	8m 57s
photonserver-build-offline-docs	1m 0s
Photonlib - Build Host - Linux	4m 45s
Photonlib - Build Docker - Aarch64	9m 57s
photonserver-check-lint	1m 8s
wpiformat	25s
Build fat JAR - Win64	3m 37s
Build fat JAR - macOS	2m 14s
Build fat JAR - Linux	2m 30s
Build fat JAR - macOSArm	2m 11s
Build fat JAR - LinuxArm32	1m 56s
Build fat JAR - LinuxArm64	1m 38s
Build image - ${{ matrix.image_url }}	0s
photon-release	0s
	1h 8m 46s

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