Bump rexml from 3.3.4 to 3.3.6 #3276

Job	Run time
catalyst	11m 24s
pod-lib-lint (ios, macos-14, --use-modular-headers)	4m 15s
quickstart	1m 35s
pod-lib-lint (ios, macos-14)	4m 22s
pod-lib-lint (ios, macos-13, --use-modular-headers)	42m 37s
quickstart-ftl-cron-only	0s
pod-lib-lint (ios, macos-13)	11m 28s
spm (iOS, macos-13)	7m 58s
pod-lib-lint (tvos, macos-14, --use-modular-headers)	3m 45s
spm (iOS, macos-14)	35m 53s
pod-lib-lint (tvos, macos-14)	8m 49s
spm (tvOS, macos-13)	9m 19s
pod-lib-lint (tvos, macos-13, --use-modular-headers)	19m 1s
spm (tvOS, macos-14)	11m 2s
pod-lib-lint (tvos, macos-13)	8m 57s
spm (macOS, macos-13)	4m 56s
pod-lib-lint (macos, macos-14, --use-modular-headers)	5m 0s
spm (macOS, macos-14)	17m 54s
pod-lib-lint (macos, macos-14)	7m 17s
spm (catalyst, macos-13)	4m 33s
pod-lib-lint (macos, macos-13, --use-modular-headers)	11m 38s
spm (catalyst, macos-14)	8m 18s
pod-lib-lint (macos, macos-13)	10m 49s
pod-lib-lint (watchos --skip-tests, macos-14, --use-modular-headers)	3m 24s
spm (watchOS, macos-13)	6m 36s
pod-lib-lint (watchos --skip-tests, macos-14)	3m 29s
spm (watchOS, macos-14)	5m 41s
pod-lib-lint (watchos --skip-tests, macos-13, --use-modular-headers)	3m 47s
spm (macos-14, visionOS, Xcode_15.3)	5m 43s
pod-lib-lint (watchos --skip-tests, macos-13)	5m 42s
crashlytics-cron-only	0s
	4h 45m 12s

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