remove upper bounds and unnecessary dependencies

- remove libraries replaced by ruff
- remove upper bounds of other libraries

pyproject.toml

@@ -76,27 +76,24 @@ test = "invoke tests"
 
 [tool.pdm.dev-dependencies]
 dev = [
-    "BeautifulSoup4<5.0,>=4.9",
+    "BeautifulSoup4>=4.9",
     "jinja2~=3.1.2",
-    "lxml<5.0,>=4.3",
+    "lxml>=4.3",
     "markdown~=3.4.3",
-    "typogrify<3.0,>=2.0",
-    "sphinx<6.0,>=5.1",
+    "typogrify>=2.0",
+    "sphinx>=5.1",
     "furo==2023.03.27",
-    "livereload<3.0,>=2.6",
-    "psutil<6.0,>=5.7",
+    "livereload>=2.6",
+    "psutil>=5.7",
     "pygments~=2.15",
-    "pytest<8.0,>=7.1",
-    "pytest-cov<5.0,>=4.0",
-    "pytest-sugar<1.0.0,>=0.9.5",
-    "pytest-xdist<3.0,>=2.0",
-    "tox<4.0,>=3.13",
-    "flake8<4.0,>=3.8",
-    "flake8-import-order<1.0.0,>=0.18.1",
-    "invoke<3.0,>=2.0",
-    "isort<6.0,>=5.2",
+    "pytest>=7.1",
+    "pytest-cov>=4.0",
+    "pytest-sugar>=0.9.5",
+    "pytest-xdist>=2.0",
+    "tox>=3.13",
+    "invoke>=2.0",
     "black>=23.10.1",
-    "ruff>=0.1.3,<1.0.0",
+    "ruff>=0.1.3",
     "tomli;python_version<'3.11'",
 ]
 

tasks.py

@@ -62,16 +62,6 @@ def black(c, check=False, diff=False):
     c.run(f"{VENV_BIN}/black {check_flag} {diff_flag} {PKG_PATH} tasks.py", pty=PTY)
 
 
-@task
-def isort(c, check=False, diff=False):
-    check_flag, diff_flag = "", ""
-    if check:
-        check_flag = "-c"
-    if diff:
-        diff_flag = "--diff"
-    c.run(f"{VENV_BIN}/isort {check_flag} {diff_flag} .", pty=PTY)
-
-
 @task
 def ruff(c, fix=False, diff=False):
     """Run Ruff to ensure code meets project standards."""