Stop using precice/nightly container in the release workflow

Author: IshaanDesai

.github/workflows/release.yml

@@ -9,9 +9,6 @@ jobs:
   build:
     name: Build package
     runs-on: ubuntu-latest
-    container:
-      image: precice/precice:nightly
-      options: --user root
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5