ci: Change PATH var

Due to update of toolchain container, fasm in /home/autobuild/... folder

.gitea/workflows/build.yaml

@@ -75,6 +75,8 @@ jobs:
           chmod +x /home/autobuild/tools/win32/bin/objconv
 
       - name: Build and install kerpack
+        environment:
+          PATH: /home/autobuild/tools/win32/bin:$PATH
         if: steps.cache-toolchain.outputs.cache-hit != 'true'
         run: |
           cd ${{ gitea.workspace }}/programs/other/kpack/kerpack_linux/