refactor: remove mdBook & use assert_path_exists (#47)

* build: remove mdBook & use `assert_path_exists`

* chore: update runner images

* Update tests.yml

Author: sgoudham

.github/workflows/publish.yml

@@ -6,7 +6,7 @@ on:
 jobs:
   pr-pull:
     if: contains(github.event.pull_request.labels.*.name, 'pr-pull')
-    runs-on: ubuntu-22.04
+    runs-on: ubuntu-24.04
     permissions:
       contents: write
       packages: write

.github/workflows/tests.yml

@@ -8,7 +8,7 @@ jobs:
   test-bot:
     strategy:
       matrix:
-        os: [ubuntu-22.04, macos-13]
+        os: [ubuntu-24.04, macos-26]
     runs-on: ${{ matrix.os }}
     steps:
       - name: Set up Homebrew
@@ -17,7 +17,7 @@ jobs:
 
       - name: Cache Homebrew Bundler RubyGems
         id: cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ${{ steps.set-up-homebrew.outputs.gems-path }}
           key: ${{ runner.os }}-rubygems-${{ steps.set-up-homebrew.outputs.gems-hash }}
@@ -34,7 +34,7 @@ jobs:
 
       - name: Upload bottles as artifact
         if: always() && github.event_name == 'pull_request'
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v7
         with:
           name: bottles_${{ matrix.os }}
           path: '*.bottle.*'

Formula/catwalk.rb

@@ -21,6 +21,6 @@ def install
   end
 
   test do
-    assert_predicate (bin/"catwalk"), :exist?
+    assert_path_exists (bin/"catwalk"), :exist?
   end
 end

Formula/mdbook-catppuccin.rb

@@ -19,6 +19,6 @@ def install
   end
 
   test do
-    assert_predicate (bin/"whiskers"), :exist?
+    assert_path_exists (bin/"whiskers"), :exist?
   end
 end