`source_url` in `Maven::UpdaterChecker::RequirementsUpdater` can be `nil` #18557

Job	Run time
discover	12s
e2e (gradle, gradle, smoke-gradle-group-multidir.yaml, e7e6b03878d9c7471e3b5aebbdbe5a1529cd1a80)	1m 44s
e2e (gradle, gradle, smoke-gradle-version-catalog.yaml, 04fc4db206b0a59cd0a2c59e0f074cf440ca01a3)	1m 25s
e2e (gradle, gradle, smoke-gradle-version-multidir.yaml, c94555192f72c814600f1a79e39c9af0c1a97f60)	1m 46s
e2e (gradle, gradle, smoke-gradle.yaml, 35c1db6d7957b8a5cdbdce765e3d37d57043de8d)	46s
e2e (maven, maven, smoke-maven-group-multidir.yaml, c3a88b37e055a4f48ca0ad736a415faecacc855d)	45s
e2e (maven, maven, smoke-maven-version-multidir.yaml, ad87b17f297957c72d9afe1e279ed0b5b42998c6)	1m 6s
e2e (maven, maven, smoke-maven.yaml, f96ba14df7988fdb8a114990fc1033365d9c6e76)	47s
	8m 31s

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