Builds billing new pricing date update (#20244)

* new pricing announcement

* Update src/content/docs/workers/ci-cd/builds/limits-and-pricing.mdx

Co-authored-by: ToriLindsay <[email protected]>

* Update limits-and-pricing.mdx

---------

Co-authored-by: ToriLindsay <[email protected]>

Author: aninibread

src/content/docs/workers/ci-cd/builds/limits-and-pricing.mdx

@@ -23,7 +23,7 @@ While in open beta, the following limits are applicable for Workers Builds. Plea
 
 During the beta, Workers Builds will be free to try with the limits stated above.
 
-In the future, once Workers Builds becomes generally available, you can expect the following updates to the limits and pricing structure.
+Starting 2025-04-02, you can expect the following updates to the limits and pricing structure.
 
 | Metric                    | Workers Free  | Paid                               |
 | ------------------------- | ------------- | ---------------------------------- |