efficientdet: update requirements.txt

This patch modifies the requirements file to only install TensorFlow
versions older than 2.16.0, since some breaking changes made it
incompatible with the efficientdet repository (like the removal of the
Estimator API). It also tightens the dependency on numpy, since version
1.24.0 removed some deprecated type aliases used by cocoapi, like
np.float.

efficientdet/requirements.txt

@@ -1,11 +1,11 @@
 lxml>=4.6.1
 absl-py>=0.10.0
 matplotlib>=3.0.3
-numpy>=1.19.4
+numpy>=1.19.4,<1.24.0
 Pillow>=9.5.0
 PyYAML>=5.1
 six>=1.15.0
-tensorflow>=2.10.0
+tensorflow>=2.10.0,<2.16.0
 tensorflow-addons>=0.18.0
 tensorflow-hub>=0.11
 neural-structured-learning>=1.3.1