chore: auto-update metadata coverage in METADATA_SUPPORT.md [no ci]

Author: svc-cli-bot

METADATA_SUPPORT.md

@@ -764,7 +764,6 @@ v66 introduces the following new types.  Here's their current level of support
 |IndustriesMfgSampleManagementSettings|✅||
 |IntegArtifactDef|❌|Not supported, but support could be added|
 |InventoryAllocationSettings|✅||
-|ItGrcSettings|✅||
 |LogicSettings|✅||
 |MapReportSettings|✅||
 |ObjectMappingSettings|✅||