fixup! fixup! fixup! ci(32bit): use custom image to run PHP unit tests on 32bit

Author: susnux

.github/workflows/phpunit-32bits.yml

@@ -37,6 +37,8 @@ jobs:
       - name: Install node
         run: |
           curl -o- https://raw.githubusercontent.com/nvm-sh/nvm/v0.40.3/install.sh | bash
+          export NVM_DIR="$HOME/.nvm"
+          [ -s "$NVM_DIR/nvm.sh" ] && \. "$NVM_DIR/nvm.sh"
           nvm install 24
 
       - name: Checkout server