chore: prefer uv sync --locked

Author: afuetterer

.github/CONTRIBUTING.md

@@ -65,7 +65,7 @@ Here's how to set up `python-re3data` for local development.
 
     ```console
     $ cd python-re3data
-    $ uv sync --frozen
+    $ uv sync --locked
     ```
 
 4. Create a branch for local development:

.github/workflows/test.yml

@@ -9,7 +9,7 @@ permissions: {}
 env:
   PYTHONUNBUFFERED: 1
   FORCE_COLOR: 1
-  UV_FROZEN: true # do not update the lockfile during `uv sync` and `uv run` commands
+  UV_LOCKED: true # do not update the lockfile during `uv sync` and `uv run` commands
 
 jobs:
   test:

justfile

@@ -6,10 +6,10 @@ _default:
     @just --list --unsorted
 
 sync:
-    uv sync --frozen
+    uv sync --locked
 
 sync-docs:
-    uv sync --frozen --group=docs
+    uv sync --locked --group=docs
 
 @project-version:
     uv run toml get --toml-path pyproject.toml project.version