Bump to TF2.15 #3457

Job	Run time
Build Number	0s
Lint for Docs	11s
Lint	3m 59s
Linux	19m 10s
Bazel Linux	38m 21s
macOS	34m 6s
Bazel macOS arm64	1s
Bazel macOS	52m 58s
Bazel Windows	17m 4s
Wheel ${{ matrix.python }} Windows	0s
Test ${{ matrix.python }} Windows	0s
Nightly ${{ matrix.python }} Windows	0s
Wheel ${{ matrix.python }} Linux	0s
Test ${{ matrix.python }} Linux	0s
Nightly ${{ matrix.python }} Linux	0s
Wheel 3.9 macOS	34s
Wheel 3.10 macOS	34s
Wheel 3.11 macOS	1m 20s
Test 3.9 macOS	1h 31m 21s
Nightly ${{ matrix.python }} macOS	0s
Release	0s
Docker Nightly	0s
Nightly	0s
Release Candidate	0s
Docker Release	0s
Wheel ${{ matrix.python }} macOS arm64	0s
Release (MacOS arm64)	0s
Release Candidate (MacOS arm64)	0s
	4h 19m 39s

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