remove docker upgrades from CI

Signed-off-by: ahuston-0 <aliceghuston@gmail.com>

.github/workflows/flake-update.yml

@@ -10,11 +10,11 @@ jobs:
     if: github.ref == 'refs/heads/main' # ensure workflow_dispatch only runs on main
     steps:
       - uses: actions/checkout@v4
-      - name: Login to Docker Hub
-        uses: docker/login-action@v3
-        with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      # - name: Login to Docker Hub
+        # uses: docker/login-action@v3
+        # with:
+        #   username: ${{ secrets.DOCKERHUB_USERNAME }}
+        #   password: ${{ secrets.DOCKERHUB_TOKEN }}
       - name: Install Nix
         uses: cachix/install-nix-action@v24
         with:
@@ -24,8 +24,8 @@ jobs:
       - uses: DeterminateSystems/magic-nix-cache-action@main
       - name: Calculate pre-drv
         run: nix ./utils/eval-to-drv.sh pre
-      - name: Pull latest docker images
-        run: nix ./utils/fetch-docker.sh
+      # - name: Pull latest docker images
+      #   run: nix ./utils/fetch-docker.sh
       - name: Update flake.lock (part 1)
         run: nix flake update
       - name: Calculate post-drv