Add repo.spring.io repositories and pluginRepositores #207

Job	Run time
deploy / setup	5s
deploy / Build main (JDK 21)	8m 21s
deploy / Build main (JDK 25)	21m 29s
deploy / Build main (JDK 17)	10m 23s
deploy / Trigger CI for non-default branches	0s
deploy / setup	6s
deploy / Build main (JDK 25)	5m 58s
deploy / Build main (JDK 21)	6m 1s
deploy / Build main (JDK 17)	7m 17s
deploy / Trigger CI for non-default branches	0s
	59m 40s

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