Update dependency trufflesecurity/trufflehog to v3.7.3

This MR contains the following updates:

Package	Type	Update	Change
trufflesecurity/trufflehog	ironbank-docker	patch	3.7.2 -> 3.7.3
trufflesecurity/trufflehog		patch	3.7.2 -> 3.7.3
trufflesecurity/trufflehog	stage	patch	3.7.2 -> 3.7.3

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Release Notes

trufflesecurity/trufflehog

v3.7.3

Compare Source

Changelog

• 8826e36 AWS detector should detect with leading '+' (#​698)
• dfb7e9a Add hash v2 to results proto. (#​693)

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