style(deps[docs]): Bump gp-sphinx packages to 0.0.1a5

why: Align pinned docs dependencies with latest PyPI gp-sphinx workspace releases
what:
- Pin gp-sphinx, sphinx-autodoc-api-style, and sphinx-autodoc-pytest-fixtures to 0.0.1a5
- Regenerate uv.lock (path overrides unchanged)

Author: tony

pyproject.toml

@@ -52,9 +52,9 @@ Changes = "https://github.com/tmux-python/libtmux/blob/master/CHANGES"
 [dependency-groups]
 dev = [
   # Docs (via gp-sphinx)
-  "gp-sphinx>=0.0.1a1",
-  "sphinx-autodoc-api-style>=0.0.1a1",
-  "sphinx-autodoc-pytest-fixtures>=0.0.1a1",
+  "gp-sphinx==0.0.1a5",
+  "sphinx-autodoc-api-style==0.0.1a5",
+  "sphinx-autodoc-pytest-fixtures==0.0.1a5",
   "sphinx-autobuild",
   "types-docutils",
   # Testing
@@ -75,9 +75,9 @@ dev = [
 ]
 
 docs = [
-  "gp-sphinx>=0.0.1a1",
-  "sphinx-autodoc-api-style>=0.0.1a1",
-  "sphinx-autodoc-pytest-fixtures>=0.0.1a1",
+  "gp-sphinx==0.0.1a5",
+  "sphinx-autodoc-api-style==0.0.1a5",
+  "sphinx-autodoc-pytest-fixtures==0.0.1a5",
   "sphinx-autobuild",
 ]
 testing = [