Update Costura template references

[emmanuel-ferdman]

Description of Change

Commit 404a6fa70ae1a7890d1b51ee162449fd241aeee0 moved the location of ILTemplateWithTempAssembly.cs and ILTemplateWithTempAssembly.cs. This PR adjust sources to changes.

Issues Resolved

• fixes #

API Changes

None

Behavioral Changes

None

Testing Procedure

PR Checklist

• [ ] I have included examples or tests
• [ ] I have updated the change log or created a GitHub ticket with the change
• [ ] I am listed in the CONTRIBUTORS file (if it exists)
• [ ] Changes adhere to coding standard
• [ ] I checked the licenses of Third Party software and discussed new dependencies with at least 1 other team member

[GeertvanHorrik]

Excellent PR, thank you!