Update for 5.6.0

snap/snapcraft.yaml

@@ -50,8 +50,6 @@ parts:
     override-pull: |
       snapcraftctl pull
       tag=$(git describe --tags $(git rev-list --tags --max-count=1))
-      # Temporary hack to work around incompatibility with 5.5.1
-      if [ "$tag" = "1.9.0mt6" ]; then tag=1.9.0mt5; fi
       git checkout "$tag"
   minetest:
     source: https://github.com/minetest/minetest.git
@@ -78,6 +76,7 @@ parts:
       - libsqlite3-dev
       - libvorbis-dev
       - libx11-dev
+      - libxi-dev
       - libzstd-dev
       - zlib1g-dev
     stage-packages:
@@ -104,3 +103,4 @@ parts:
       - libxdamage1
       - libx11-6
       - libx11-xcb1
+      - libxi6