ci: disable larger ROM sizes

everything >= 8k currently fails (and it also takes a long time to do so)

related issue: VLSIDA/OpenRAM#232

Author: urish

.github/workflows/openrom.yaml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        size: [128, 256, 512, 1024, 2048, 4096, 6144, 8192, 12288, 16384, 24576, 32768]
+        size: [128, 256, 512, 1024, 2048, 4096, 6144]
       fail-fast: false
     steps:
       - uses: actions/checkout@v4