bump snapcraft to v1.8.1

Author: adsr

snapcraft.yaml

@@ -6,9 +6,9 @@ description: |
   scriptable rc file, macros, search and replace (PCRE), window 
   splitting, multiple cursors, and integration with various shell 
   commands.
-version: 1.7.2
+version: 1.8.1
 license: Apache-2.0
-base: core22
+base: core24
 grade: stable
 confinement: strict
 
@@ -23,5 +23,4 @@ parts:
     source-commit: 064147fc83e5587bf793cb8ccbfe51525c6b5489
     source-type: git
     make-parameters: ["-j1", "mle_vendor=1", "mle_static=1"]
-    build-packages: [libtool, automake]
     stage-packages: [fzf, tree, less, perl, universal-ctags]