Website: Add two testimonials (#30649)

Closes https://github.com/fleetdm/confidential/issues/11135
Closes https://github.com/fleetdm/confidential/issues/11134

Changes:
- Added two new testimonials to the /testimonials and /device-management
pages

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

## Summary by CodeRabbit

* **New Features**
* Added two new testimonials focused on Linux desktop management,
enhancing the "Device management" section.
* Updated testimonial display order to include the new authors for
improved visibility in the relevant category.

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

handbook/company/testimonials.yml

@@ -266,3 +266,19 @@
   quoteAuthorJobTitle: Redditor
   quoteAuthorProfileImageFilename: testimonial-author-redditor-48x48@2x.png  
   productCategories: [Device management]
+-
+  quote: We chose Fleet because they take Linux desktop management seriously. It was smooth as butter to set up and start deploying. Fleet gives me the peace of mind knowing that our Linux Fleet is properly managed, monitored, and secure.
+  quoteImageFilename: logo-nutanix-140x32@2x.png
+  quoteLinkUrl: https://www.linkedin.com/in/roger-cantrell-964580130/
+  quoteAuthorName: Roger Cantrell
+  quoteAuthorJobTitle: IT Operations Engineer
+  quoteAuthorProfileImageFilename: testimonial-author-roger-cantrell-100x100@2x.png 
+  productCategories: [Device management]
+-
+  quote: The POC actually went really well for us. Within the first couple of days I was already on-board and ready to go. I knew it was the solution for us and didn't need to look at anything else [for Linux MDM].
+  quoteImageFilename: logo-northwestern-162x20@2x.png
+  quoteLinkUrl: https://www.linkedin.com/in/chotipradit/
+  quoteAuthorName: Philip Chotipradit
+  quoteAuthorJobTitle: System Administrator - Endpoint Engineering
+  quoteAuthorProfileImageFilename: testimonial-author-philip-chotipradit-100x100@2x.png
+  productCategories: [Device management]

website/api/controllers/view-device-management.js

@@ -37,6 +37,8 @@ module.exports = {
       'Matt Carr',
       'Nico Waisman',
       'Dan Grzelak',
+      'Philip Chotipradit',
+      'Roger Cantrell',
     ];
 
     // Filter the testimonials by product category

website/api/controllers/view-testimonials.js

@@ -37,6 +37,8 @@ module.exports = {
       'Matt Carr',
       'Nico Waisman',
       'Dan Grzelak',
+      'Philip Chotipradit',
+      'Roger Cantrell',
       'u/Heteronymous',
     ];
     let testimonialsForMdm = _.filter(testimonials, (testimonial)=>{