updated the .github .yml files to fix depandabot issues

Author: mlampros

.github/workflows/docker-image.yml

@@ -3,6 +3,7 @@
 # build, push and cache the docker image. I have to adjust the following in case of a different repository:
 #        - I have to add the 'BUILD_DATE' arg in the Dockerfile
 #        - I have to create a DOCKER_PASSWORD (use the docker token) in the 'Settings' tab of the repository
+#        - This github action also updates the dockerhub readme file
 # References:
 #        - https://github.com/mlampros/IceSat2R/blob/master/.github/workflows/docker_image.yml
 #        - https://github.com/orgs/community/discussions/25768#discussioncomment-3249184
@@ -22,7 +23,7 @@ jobs:
 
     steps:
       - name: Check Out Repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - id: string
         uses: ASzc/change-string-case-action@v6

.github/workflows/pkgdown.yaml

@@ -42,7 +42,7 @@ jobs:
 
       - name: Deploy to GitHub pages 🚀
         if: github.event_name != 'pull_request'
-        uses: JamesIves/github-pages-deploy-action@v4.5.0
+        uses: JamesIves/github-pages-deploy-action@v4.7.3
         with:
           clean: false
           branch: gh-pages