feat(shuttle): integrate updated tt-multiplexer & openlane 2.3.8

Author: htfab

.github/config/openlane.txt

@@ -1,2 +1,2 @@
-OPENLANE_TAG=2.0.7
+OPENLANE_TAG=2.3.8
 SKY130_PDK_VERSION=6d4d11780c40b20ee63cc98e645307a9bf2b2ab8

.github/workflows/gds.yaml

@@ -119,6 +119,9 @@ jobs:
       - name: Create eFabless submission
         run: python ./tt/configure.py --create-efabless-submission
 
+      - name: Patch GL power pin assignments
+        run: sed -i 's/^ assign \(v[a-z0-9]*\) = \(v[a-z]*\);$/ assign \1 = \2; assign \2 = \1;/' efabless/verilog/gl/openframe_project_wrapper.v
+
       - name: upload GDS artifact
         if: success() || failure()
         uses: actions/upload-artifact@v4