Fix dependencies

pyproject.toml

@@ -6,17 +6,17 @@ description = "Package for managing codelists & attributes for IAMC-format datas
 license = "APACHE-2.0"
 readme = "README.md"
 dependencies = [
-    python = ">=3.10, <3.13",
-    click = ">= 8",
-    pyam-iamc = ">= 2.1",
-    openpyxl = "^3.1.2",
-    pydantic = "^2",
-    PyYAML = "^6.0.1",
-    pandas = ">=1.5.2",
-    pycountry = "23.12.11",
-    pysquirrel = "^1.1",
-    gitpython = "^3.1.40",
-    numpy = ">=1.23.0"
+    "python>=3.10,<3.13",
+    "click>=8",
+    "pyam-iamc>=2.1",
+    "openpyxl>=3.1.2",
+    "pydantic>=2",
+    "PyYAML>=6.0.1",
+    "pandas>=1.5.2",
+    "pycountry23.12.11",
+    "pysquirrel>=1.1",
+    "gitpython>=3.1.40",
+    "numpy>=1.23.0"
 ]
 
 [project.scripts]
@@ -26,16 +26,16 @@ nomenclature = 'nomenclature.cli:cli'
 packages = [{include = "nomenclature"}]
 
 [tool.poetry.group.dev.dependencies]
-ruff = "^0.6.2"
-mypy = "^1.7.1"
-flake8 = "^6.1.0"
-pytest = "^7.4.3"
-coverage = "^7.3.3"
+ruff = ">=0.6.2"
+mypy = ">=1.7.1"
+flake8 = ">=6.1.0"
+pytest = ">=7.4.3"
+coverage = ">=7.3.3"
 
 [tool.poetry.group.docs.dependencies]
-sphinx = "^7.2.6"
-sphinx-click = "^5.1.0"
-numpydoc = "^1.6.0"
+sphinx = ">=7.2.6"
+sphinx-click = ">=5.1.0"
+numpydoc = ">=1.6.0"
 
 [tool.poetry-dynamic-versioning]
 bump = true