Updating Tensorflow dependency to ~=2.15

PiperOrigin-RevId: 615114177

Author: tfx-copybara

RELEASE.md

@@ -8,7 +8,7 @@
 
 *   Bumped the Ubuntu version on which `struct2tensor` is tested to 20.04
     (previously was 16.04).
-*   Depends on `tensorflow>=2.15.0,<3`.
+*   Depends on `tensorflow~=2.15.0`.
 *   Bumped the minimum bazel version required to build `struct2tensor` to 6.1.0.
 *   Depends on `protobuf>=4.25.2,<5` for Python 3.11 and on `protobuf>3.20.3,<5`
     for 3.9 and 3.10.

setup.py

@@ -79,7 +79,7 @@ def select_constraint(default, nightly=None, git_master=None):
         'numpy>=1.22',
         'protobuf>=4.25.2,<5;python_version>="3.11"',
         'protobuf>=3.20.3,<5;python_version<"3.11"',
-        'tensorflow>=2.15,<3',
+        'tensorflow~=2.15',
         'tensorflow-metadata' + select_constraint(
             default='>=1.14.0,<1.15.0',
             nightly='>=1.15.0.dev',