github/workflows: set pdk in workflow

.github/workflows/user_project_ci.yml

diff --git a/.github/workflows/user_project_ci.yml b/.github/workflows/user_project_ci.yml
index 63e864f..c5b739d 100644
--- a/.github/workflows/user_project_ci.yml
+++ b/.github/workflows/user_project_ci.yml
@@ -15,8 +15,8 @@
 env:
   PDK_ROOT: '/home/runner/work/pdk'
   OPENLANE_ROOT: '/home/runner/work/openlane'
-  PDK: 'sky130A'
-  SETUP_TAG: 'mpw-7a'
+  PDK: 'gf180mcuC'
+  SETUP_TAG: 'gfmpw-0a'
 
 jobs:
   gds:

Makefile

diff --git a/Makefile b/Makefile
index a8eea58..3d3c623 100644
--- a/Makefile
+++ b/Makefile
@@ -24,7 +24,8 @@
 CARAVEL_LITE?=1
 
 # PDK switch varient
-export PDK?=gf180mcuC
+export PDK?=sky130B
+#export PDK?=gf180mcuC
 export PDKPATH?=$(PDK_ROOT)/$(PDK)