Update the bump tool

tools/bump.sh

@@ -21,13 +21,11 @@ manual_release=false
 
 ASSETS=(
   "_sass/jekyll-theme-chirpy.scss"
-  "assets/js/.copyright"
+  "assets/js/_copyright"
 )
 
 GEM_SPEC="jekyll-theme-chirpy.gemspec"
 
-GEM_LOCK="Gemfile.lock"
-
 NODE_META="package.json"
 
 _check_src() {
@@ -75,17 +73,10 @@ _bump_node() {
     $NODE_META
 }
 
-_bump_gemlock() {
-  sed -i \
-    "s/jekyll-theme-chirpy ([[:digit:]]\+\.[[:digit:]]\+\.[[:digit:]]\+/jekyll-theme-chirpy ($1/" \
-    $GEM_LOCK
-}
-
 bump() {
   _bump_assets "$1"
   _bump_gemspec "$1"
   _bump_node "$1"
-  _bump_gemlock "$1"
 
   if [[ -n $(git status . -s) ]]; then
     git add .