Updated publish CI/CD workflow (#1111)

* updated package versions for GH actions

* fixed typo in PR template

Author: d-kleine

.github/PULL_REQUEST_TEMPLATE.md

@@ -23,7 +23,7 @@ close the listed issue upon merging this Pull Request.
 ### Pull Request Checklist
 
 <!--
-Please fill out the following checklist if applicable. For more more information and help, please see the Contributor Documentation avaialable at https://rasbt.github.io/mlxtend/contributing/.
+Please fill out the following checklist if applicable. For more more information and help, please see the Contributor Documentation available at https://rasbt.github.io/mlxtend/contributing/.
 -->
 
 - [ ] Added a note about the modification or contribution to the `./docs/sources/CHANGELOG.md` file (if applicable)

.github/workflows/publish.yaml

@@ -20,10 +20,10 @@ jobs:
 
     steps:
       - name: Checkout source
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Set up Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v5
         with:
           python-version: "3.x"