Bugfix/nathen418/update docker publish (#30)

Signed-off-by: Nate Goldsborough <nathen418@playantares.com>

# Descriptive title

Updates the docker image publish workflow not to have a typo that causes
it to fail

# Changes
- changes the `main` tag to `master`.   
`machine-learning-apps/gpr-docker-publish@main` -->
`machine-learning-apps/gpr-docker-publish@master`

Author: schiltz3

.github/workflows/publish-docker-image.yml

@@ -13,11 +13,11 @@ jobs:
      #This Action Emits 2 Variables, IMAGE_SHA_NAME and IMAGE_URL 
      #which you can reference in subsequent steps
     - name: Publish Docker Image to GPR
-      uses: machine-learning-apps/gpr-docker-publish@main
+      uses: machine-learning-apps/gpr-docker-publish@master
       id: docker
       with:
         IMAGE_NAME: 'cssc-bot'
         TAG: 'latest'
         DOCKERFILE_PATH: './Dockerfile'
       env:
-        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}