Update troposphere to 4.5.2 - #1921

Update troposphere to 4.5.2#1921

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masteribejohn818/stackformation:masterfrom

pyup-update-troposphere-2.4.7-to-4.5.2ibejohn818/stackformation:pyup-update-troposphere-2.4.7-to-4.5.2Copy head branch name to clipboard