Use rustg 1.2.0+a2 (from our other repo), update our pipeline, fix what's needed to not make it fail (#16051)

* Let's see how this goes, updated the versions of various dependencies

* Changelog

* Didn't we merge a fix for those already? Anyways...

* Almost...

* Switch flyway to 9.9.0 instead

* Forgot one place where this is doubly defined

* Package dependency attempt fix

* Try to run on latest ubuntu version

* Forgot one

* Try to force cffi consistency

* Other way around

* aurora was a mistake

* Like this more?

* Stupid pipeline

* F

* FF

* Bruh ZAS

* GDI

* FFS ZAS + UT

* Checked maps, temp is set as this in there, so updating ZAS UT, wich was probably conked before

* All AI rooms are in normal expectation, so updating ZAS UT for it

* First attempt at making the AI area in the Horizon cooled

* F

* And the old aurora

* Remove version binding on requirements

* Updated changelog

* Spelling

* Binds versions again, as majority voted

code/modules/hallucinations/types/basic.dm

@@ -147,6 +147,8 @@
 			holder.make_dizzy(105)
 		if(3)
 			to_chat(holder, SPAN_GOOD("You feel good."))
+		else
+			. = null //This does nothing, it's to avoid a dreamchecker error
 	..()
 
 //the prick feeling but you actually imagine someone injecting you