Merge pull request #356 from yrabbit/yosys-version

Bump the Yosys version.

Author: yrabbit

.github/workflows/chipdb.yml

@@ -251,7 +251,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        yosys: [main, v0.54]
+        yosys: [main, v0.55]
         nextpnr: [master, nextpnr-0.8]
     steps:
     - uses: actions/checkout@v4