Update build.yml

Author: go-dark-mode

.github/workflows/build.yml

@@ -24,4 +24,5 @@ jobs:
         sudo apt-get update
         sudo apt-get upgrade -y
         sudo apt-get install libx11-dev -y
-        go build -o cogent . && cogent -testcheck true
+        mkdir -p /tmp/runner
+        go build -o /tmp/runner/cogent . && /tmp/runner/cogent -testcheck true && rm -rf /tmp/runner