sandbox: Switch to exile.h (former qssb.h)

README.md

@@ -72,8 +72,7 @@ Building
 Dependencies:
   - cpp-httplib: https://github.com/yhirose/cpp-httplib
   - SqliteModernCpp: https://github.com/SqliteModernCpp
-  - qssb.h: https://gitea.quitesimple.org/crtxcr/qssb.h
-  - libseccomp: https://github.com/seccomp/libseccomp
+  - exile.h: https://gitea.quitesimple.org/crtxcr/exile.h
   - sqlite3: https://sqlite.org/index.html
     
 The first three are header-only libraries that are included as a git submodule. The others must