Only build with 12.8

Author: Thireus

.github/workflows/build.yml

@@ -979,7 +979,7 @@ jobs:
 
     strategy:
       matrix:
-        cuda: ['12.8', '11.7']
+        cuda: ['12.8']
 
     steps:
       - name: Clone

.github/workflows/release.yml

@@ -390,7 +390,7 @@ jobs:
 
     strategy:
       matrix:
-        cuda: ['12.8', '11.7']
+        cuda: ['12.8']
 
     steps:
       - name: Clone