Update hashicorp/terraform Docker tag to v1.3.7

This MR contains the following updates:

Package	Type	Update	Change
hashicorp/terraform	ironbank-docker	patch	1.3.6 -> 1.3.7
hashicorp/terraform		patch	1.3.6 -> 1.3.7
hashicorp/terraform	stage	patch	1.3.6 -> 1.3.7

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Release Notes

hashicorp/terraform

v1.3.7

Compare Source

1.3.7 (January 04, 2023)

BUG FIXES:

• Fix exact version constraint parsing for modules using prerelease versions (#​32377)
• Prevent panic when a provider returns a null block value during refresh which is used as configuration via ignore_changes (#​32428)

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