Fix 515.1621

[AffectedArc07]

Currently get this error when building with the byond-515-1621 feature.

error[E0599]: no method named `ByondValue_SetStrId` found for reference `&'static ByondApi` in the current scope
   --> C:\Users\AffectedArc07\.cargo\git\checkouts\byondapi-rs-6b86a2b778efd08c\8d16ff9\crates\byondapi-rs\src\value\functions.rs:121:26
    |
121 |         unsafe { byond().ByondValue_SetStrId(&mut self.0, strid) }
    |                          ^^^^^^^^^^^^^^^^^^^
    |
help: there is a method `ByondValue_SetStr` with a similar name
    |
121 |         unsafe { byond().ByondValue_SetStr(&mut self.0, strid) }
    |                          ~~~~~~~~~~~~~~~~~

error[E0599]: no method named `ByondValue_DecTempRef` found for reference `&'static ByondApi` in the current scope
   --> C:\Users\AffectedArc07\.cargo\git\checkouts\byondapi-rs-6b86a2b778efd08c\8d16ff9\crates\byondapi-rs\src\value\functions.rs:253:26
    |
253 |         unsafe { byond().ByondValue_DecTempRef(&self.0) }
    |                          ^^^^^^^^^^^^^^^^^^^^^
    |
help: there is a method `ByondValue_DecRef` with a similar name
    |
253 |         unsafe { byond().ByondValue_DecRef(&self.0) }
    |                          ~~~~~~~~~~~~~~~~~

For more information about this error, try `rustc --explain E0599`.
error: could not compile `byondapi` (lib) due to 2 previous errors
warning: build failed, waiting for other jobs to finish...

Let me know what other stuff I need to bump please, first PR here

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Also I made CI test compile both builds