Bump mods/signs_lib from `bd20f9b` to `1327cb2`

Milanrequested to merge
dependabot/submodules/mods/signs_lib-1327cb2 into technicworld

Bumps mods/signs_lib from bd20f9b to 1327cb2.

Commits
  • 1327cb2 make sure digger is valid before checking for creative
  • c08eb34 allow writing # on signs
  • 3ee06f9 protect against nil player on rightclick
  • 02c19e8 don't try to run the glow code if the sign's being punched by a machine
  • 8b6f5e2 fix typo
  • 85dd92f update register_sign to add glow effect for all signs with allow_glow check.
  • 16b9251 Add glow feature to signs, with three brightness levels
  • b0fac5e remove the old blue/starry background
  • 34689b5 bump minimum engine ver
  • 8b6e41c Fix warnings regarding use_texture_alpha
  • Additional commits viewable in compare view

Merge request reports