Overview of changes in Sysprof 3.39.94
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 * Fix some licenses in headers.
 * Add API to sysprofd/libsysprof to tweak.
   /proc/sys/kernel/perf_event_paranoid to improve capture quality.
   Tooling will now always try to change this value while profiling
   the system and ignore upon failure.
 * ftruncate() before overwriting proc files.
 * GTK aid has been removed as it is always enabled through the
   use of control-fd now.
 * Add a new Overlay capture frame type for mapping overlays between
   the host and the process filesystem namespace.
 * Use overlays to map podman containers to overlay directories
 * Use overlays to map flatpak containers to overlay directories for
   both /app and /usr.