Update Content Injection Module to DNN 9.13

[WillStrohl]

Sponsorship

If this request requires additional support (e.g., such as direct email/phone/meeting/development), I have the following interest in helping to sponsor the effot via GitHub Sponsors:

• None, please continute to work for me for free :P
• Absolutely, I get value out of this!
• Maybe later
• I'm already a sponsor... Woot!

Is your feature request related to a problem?

Build against DNN 9.13.0.

Describe the solution you'd like

See above.

Describe alternatives you've considered

N/A

Additional context

N/A