[squash] try to fix install path

Author: oleg-jukovec

.github/workflows/fast_testing.yaml

@@ -38,7 +38,7 @@ jobs:
             coveralls: true
 
     env:
-      TNT_DEBUG_PATH: '~/tnt-debug'
+      TNT_DEBUG_PATH: ${{ github.workspace }}/tnt-debug
 
     runs-on: ubuntu-latest
     steps: