Bump rexml from 3.2.8 to 3.3.6 #1

Job	Run time
catalyst	5m 38s
quickstart	10m 14s
pod-lib-lint (ios, macos-14)	6m 40s
quickstart-ftl-cron-only	0s
pod-lib-lint (ios, macos-13)	3m 20s
pod-lib-lint (tvos, macos-14)	3m 39s
spm (iOS, macos-13)	55s
pod-lib-lint (tvos, macos-13)	4m 23s
spm (iOS, macos-14)	35s
pod-lib-lint (macos --skip-tests, macos-14)	3m 8s
spm (tvOS, macos-13)	8s
pod-lib-lint (macos --skip-tests, macos-13)	4m 16s
spm (tvOS, macos-14)	1s
pod-lib-lint (watchos, macos-14)	2m 1s
spm (macOS, macos-13)	53s
pod-lib-lint (watchos, macos-13)	3m 32s
spm (macOS, macos-14)	41s
spm (watchOS, macos-13)	1s
spm (watchOS, macos-14)	1s
spm (catalyst, macos-13)	56s
spm (catalyst, macos-14)	51s
spm (macos-14, visionOS, Xcode_15.3)	41s
installations-cron-only	0s
	52m 34s

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