loosen dependency requirements

pyproject.toml

@@ -35,18 +35,18 @@ modeslive = "pyModeS.streamer.modeslive:main"
 
 [tool.poetry.dependencies]
 python = "^3.8"
-numpy = "^1.24"
-pyzmq = "^24.0"
-pyrtlsdr = {version = "^0.2.93", optional = true}
+numpy = ">=1.24"
+pyzmq = ">=24.0"
+pyrtlsdr = {version = ">=0.2.93", optional = true}
 
 [tool.poetry.group.dev.dependencies]
-mypy = "^0.991"
-flake8 = "^5.0.0"
-black = "^22.12.0"
-isort = "^5.11.4"
-pytest = "^7.2.0"
-pytest-cov = "^4.0.0"
-codecov = "^2.1.12"
+mypy = ">=0.991"
+flake8 = ">=5.0.0"
+black = ">=22.12.0"
+isort = ">=5.11.4"
+pytest = ">=7.2.0"
+pytest-cov = ">=4.0.0"
+codecov = ">=2.1.12"
 
 [tool.poetry.extras]
 rtlsdr = ["pyrtlsdr"]