Revert "patch: attempt to fix docs build"

This reverts commit 2643b075a6.

.readthedocs.yaml

@@ -6,7 +6,8 @@ build:
     python: "3.13"
   jobs:
     pre_install:
-      - apt install -y cargo
+      - curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+      - source ~/.cargo/env
 
 sphinx:
    configuration: docs/conf.py

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "read_aconity_layers"
-version = "0.4.5"
+version = "0.4.4"
 edition = "2021"
 
 [lib]