Update workflows

* use artifact v4 actions
* don't override user's requested REFLEX_DEP
* when deploying, use the reflex version associated with the tag

Author: masenf

.github/workflows/check_export.yml

@@ -53,8 +53,7 @@ jobs:
           python -m venv venv
           source venv/bin/activate
 
-          pip install '${{ github.event.inputs.reflex_dep || env.REFLEX_DEP }}' -r requirements.txt
-          pip install git+https://github.com/reflex-dev/reflex.git@main
+          pip install '${{ github.event.inputs.reflex_dep || env.REFLEX_DEP || "git+https://github.com/reflex-dev/reflex.git@main" }}' -r requirements.txt
 
           export OPENAI_API_KEY="dummy"
           reflex init

.github/workflows/create-artifacts.yml

@@ -24,7 +24,7 @@ jobs:
           echo "files=$files" >> $GITHUB_OUTPUT
         shell: bash
       - name: Upload zip files as artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: zip-files
           path: "*.zip"
@@ -37,7 +37,7 @@ jobs:
         file: ${{ fromJson(needs.zip-and-publish.outputs.files) }}
     steps:
       - name: Download zip files
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           name: zip-files
       - name: Debug output (file existence check)

.github/workflows/deploy.yml

@@ -10,6 +10,8 @@ jobs:
       uses: ./.github/workflows/list-templates.yml
 
     deploy:
+        # Can't deploy on a non-published release, so publish the release first.
+        if: !contains(github.event.release.tag_name, "dev")
         needs: list-templates
         runs-on: ubuntu-latest
         environment: Cloud Deploy
@@ -24,6 +26,8 @@ jobs:
             - uses: actions/checkout@v4
               with:
                 submodules: recursive
+            - name: Set reflex version for deploy
+              run: sed -i "s/^reflex.*$/reflex==${{ github.event.release.tag_name }}" >> requirements.txt
             - name: Set environment variables
               id: set-env
               run: |