libcapsule v0.20240520.0-0co1
* utils: Allocate ld_libs on the heap, avoiding a segfault with
smaller-than-default RLIMIT_STACK (ValveSoftware/steam-runtime#653)
* utils: Mark error messages to be freed automatically
* tests: Don't assume zlib has exactly three version components, fixing
build-time test failure on distributions circa 2023
* tests: Locate test data relative to executable correctly,
fixing "as-installed" testing
* debian: Require at least automake 1.15, fixing build-time test failure
in Steam Runtime 1 'scout' if a newer GLib is backported
(steamrt/tasks#112)
* CONTRIBUTING.md: Add