chore(ci): Fix container app suffix (#1166)

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- **New Features**
- Improved handling of revision names for container apps by replacing
'.' with '-' in the `revisionSuffix` parameter, ensuring compliance with
naming conventions.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

.azure/modules/containerApp/main.bicep

@@ -28,6 +28,9 @@ param resources object?
 @description('The suffix for the revision of the container app')
 param revisionSuffix string?
 
+// Container app revision name does not allow '.' character
+replace(revisionSuffix, '.', '-')
+
 var probes = [
   {
     periodSeconds: 5