Update spice-common submodule

Mostly to get fixes for older glib versions (both at compile time and
runtime).

Changes this brings in:

Christophe Fergeau (4):
      tests: Fix glib version check
      log: Clamp SPICE_DEBUG_LEVEL if it's too high
      log: Use SPICE_CONSTRUCTOR_FUNC
      log: Make sure glib threading is initialized

Eduardo Lima (Etrunko) (2):
      Fix build in systems with Glib version older than 2.38
      Add check for openssl

1 files changed, 0 insertions, 0 deletions

diff --git a/spice-common b/spice-common
-Subproject 5b6be16b37370bb774aa3c2a7d5c41791fdc3a1
+Subproject 2a4bf49edd6e094174dd6e0a65051cf4b378b03