Require younger fastapi

`fastapi < 0.92.0` contained a vulnerability, see https://github.com/tiangolo/fastapi/releases/tag/0.92.0

Also, I previously set too strict dependencies, which I resolve here.

setup.py

@@ -37,24 +37,24 @@ setup(
     packages=["rembg"],
     python_requires=">3.7, <3.11",
     install_requires=[
-        "aiohttp~=3.8.1",
-        "asyncer~=0.0.2",
-        "click~=8.1.3",
-        "fastapi~=0.87.0",
-        "filetype~=1.2.0",
-        "pooch~=1.6.0",
-        "imagehash~=4.3.1",
-        "numpy~=1.23.5",
-        "onnxruntime~=1.13.1",
-        "opencv-python-headless~=4.6.0.66",
-        "pillow~=9.3.0",
-        "pymatting~=1.1.8",
-        "python-multipart~=0.0.5",
-        "scikit-image~=0.19.3",
-        "scipy~=1.9.3",
-        "tqdm~=4.64.1",
-        "uvicorn~=0.20.0",
-        "watchdog~=2.1.9",
+        "aiohttp>=3.8.1",
+        "asyncer>=0.0.2",
+        "click>=8.1.3",
+        "fastapi>=0.92.0",
+        "filetype>=1.2.0",
+        "pooch>=1.6.0",
+        "imagehash>=4.3.1",
+        "numpy>=1.23.5",
+        "onnxruntime>=1.13.1",
+        "opencv-python-headless>=4.6.0.66",
+        "pillow>=9.3.0",
+        "pymatting>=1.1.8",
+        "python-multipart>=0.0.5",
+        "scikit-image>=0.19.3",
+        "scipy>=1.9.3",
+        "tqdm>=4.64.1",
+        "uvicorn>=0.20.0",
+        "watchdog>=2.1.9",
     ],
     entry_points={
         "console_scripts": [
@@ -62,7 +62,7 @@ setup(
         ],
     },
     extras_require={
-        "gpu": ["onnxruntime-gpu~=1.13.1"],
+        "gpu": ["onnxruntime-gpu>=1.13.1"],
     },
     version=versioneer.get_version(),
     cmdclass=versioneer.get_cmdclass(),