Make budget a required field #912

Job	Run time
Docker	19s
Pydantic V1	17s
Compatibility	23s
ubuntu-latest - python 3.8 - Lint	19s
ubuntu-latest - python 3.8 - Type check	30s
ubuntu-latest - python 3.8 - Unit tests	1m 3s
ubuntu-latest - python 3.8 - Doc tests	1m 15s
ubuntu-latest - python 3.8 - Doc tests (B)	1m 7s
ubuntu-latest - python 3.8 - Images	1m 11s
ubuntu-latest - python 3.8 - Jobs	30s
ubuntu-latest - python 3.8 - Experiments	41s
ubuntu-latest - python 3.8 - Datasets	54s
ubuntu-latest - python 3.8 - Sweep example	1m 56s
ubuntu-latest - python 3.8 - Build	25s
ubuntu-latest - python 3.8 - Style	16s
ubuntu-latest - python 3.8 - Docs	32s
Release	0s
	11m 38s

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