fix: Updated region for WAF deployments (#6267)

## Description

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Fixes #123
Closes #123
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- Azure Verified Module updates:
- [ ] Bugfix containing backwards-compatible bug fixes, and I have NOT
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---------

Co-authored-by: Ravi <[email protected]>
Co-authored-by: AjitPadhi-Microsoft <[email protected]>
Co-authored-by: Niraj Chaudhari (Persistent Systems Inc) <[email protected]>

Author: 4 people

avm/ptn/sa/build-your-own-copilot/tests/e2e/waf-aligned/main.test.bicep

@@ -25,7 +25,7 @@ param virtualMachineAdminPassword string = newGuid()
 // Dependencies //
 // ============ //
 #disable-next-line no-hardcoded-location // A value to avoid ongoing capacity challenges with Server Farm for frontend webapp in AVM Azure testing subscription
-var enforcedLocation = 'australiaeast'
+var enforcedLocation = 'japaneast'
 
 // General resources
 // =================