steam-runtime-tools v0.20230804.0

  * pressure-vessel fixes:
    - Improve log messages from capsule-capture-libs when a library
      dependency is not found (Helps: jupiter/tasks#887)
    - Be compatible with timeout(1) from busybox
      (Helps: ValveSoftware/Dota-2#2390)
    - Fix some small memory leaks
  * Diagnostic tools:
    - Be compatible with timeout(1) from busybox
    - Fix memory leaks when querying steam: protocol handler
    - Fix memory leaks when loading prior results from serialized JSON
  * Tests/CI:
    - Fix several memory leaks
  * Lint fixes
  * Documentation updates