[cd] Bump CIRCT from firtool-1.115.0 to firtool-1.116.0 (#4912)

* [test] Update printf tests to remove PRINTF_FD

Update tests that were checking for `PRINTF_FD`.  This has been removed in
CIRCT 1.116.0.

Signed-off-by: Schuyler Eldridge <[email protected]>

* [cd] Bump CIRCT from firtool-1.115.0 to firtool-1.116.0

This is an automated commit generated by the `circt/update-circt` GitHub
Action.

---------

Signed-off-by: Schuyler Eldridge <[email protected]>
Co-authored-by: Schuyler Eldridge <[email protected]>
Co-authored-by: chiselbot <[email protected]>

Author: chiselbot

etc/circt.json

@@ -1,3 +1,3 @@
 {
-  "version": "firtool-1.115.0"
+  "version": "firtool-1.116.0"
 }

src/test/scala-2/chiselTests/PrintableSpec.scala

@@ -331,7 +331,7 @@ class PrintableSpec extends AnyFlatSpec with Matchers with FileCheck {
     ChiselStage
       .emitSystemVerilog(new MyModule)
       .fileCheck()(
-        """CHECK: $fwrite(`PRINTF_FD_, "%0t %m %d %x %b %c %%\n", $time, in, in, in, in);"""
+        """CHECK: $fwrite(32'h80000002, "%0t %m %d %x %b %c %%\n", $time, in, in, in, in);"""
       )
 
   }

src/test/scala-2/chiselTests/Printf.scala

@@ -89,7 +89,7 @@ class PrintfSpec extends AnyFlatSpec with Matchers with FileCheck {
     ChiselStage
       .emitSystemVerilog(new MyModule)
       .fileCheck()(
-        """CHECK: $fwrite(`PRINTF_FD_, "%0t %m %d %x %b %c %%\n", $time, in, in, in, in);"""
+        """CHECK: $fwrite(32'h80000002, "%0t %m %d %x %b %c %%\n", $time, in, in, in, in);"""
       )
   }