fix: Use the new install URL in the starter project template (#425)

Author: LukeMathWalker

libs/pavexc_cli/template/.github/workflows/general.yml

@@ -94,7 +94,7 @@ jobs:
         run: cargo binstall -y --force --github-token=${{ secrets.GITHUB_TOKEN }} cargo-px --version="^0.1.15"
       - name: Install pavex
         run: |
-          curl --proto '=https' --tlsv1.2 -LsSf https://pavex.dev/releases/download/latest/pavex_cli-installer.sh | sh
+          curl --proto '=https' --tlsv1.2 -LsSf https://pavex.dev/install.sh | sh
       - name: Verify freshness
         run: |
           cargo px verify-freshness