chore(workflows): update setup-python and cache actions versions

Updated the setup-python action to v5 and cache action to v4 for better compatibility and performance. Fixed syntax issue in the build workflow.

.github/workflows/build-and-publish.yaml

@@ -15,7 +15,7 @@ jobs:
       uses: actions/checkout@v4
 
     - name: Set up Python 3.12
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: '3.12'
 
@@ -27,7 +27,7 @@ jobs:
     # Cache lxml wheels based on the hashed version to speed up builds.
     - name: Cache lxml wheels
       id: cache-lxml
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: .wheels
         key: ${{ runner.arch }}-lxml-${{ steps.lxml-version.outputs.lxml_line }}
@@ -42,7 +42,8 @@ jobs:
         else
           echo "Wheel not found, need to build."
           echo "::set-output name=wheel_exists::false"
-          
+        fi
+
     # Build lxml wheel if it is not found in the cache.
     - name: Build lxml wheel if not cached
       if: steps.check-wheel.outputs.wheel_exists == 'false'
@@ -71,7 +72,7 @@ jobs:
     # Cache lxml wheels based on the hashed version to speed up builds.
     - name: Cache lxml wheels
       id: cache-lxml
-      uses: actions/cache@v2
+      uses: actions/cache@v4
       with:
         path: .wheels
         key: ${{ runner.arch }}-lxml-${{ steps.lxml-version.outputs.lxml_line }}