Changed Icarus verilog package name in environment.yml
diff --git a/environment.yml b/environment.yml
index 08e754a..320a1a5 100644
--- a/environment.yml
+++ b/environment.yml
@@ -22,7 +22,7 @@
 - pip
 - yosys
 - netlistsvg
-- verilog
+- iverilog
 # Packages installed from PyPI
 - pip:
   - -r file:requirements.txt