Change default_auto_field to BigAutoField #400

Job	Run time
Integration/Coverage/Docs/Codestyle (flake8)	1m 3s
Integration/Coverage/Docs/Codestyle (flake8)	1m 3s
Integration/Coverage/Docs/Codestyle (pydocstyle)	1m 13s
Integration/Coverage/Docs/Codestyle (pydocstyle)	53s
Unittest Matrix (3.8, 32)	56s
Unittest Matrix (3.8, 32)	1m 43s
Integration/Coverage/Docs/Codestyle (cov)	1m 9s
Integration/Coverage/Docs/Codestyle (cov)	58s
Unittest Matrix (3.8, 41)	53s
Unittest Matrix (3.8, 41)	57s
Integration/Coverage/Docs/Codestyle (integration)	1m 21s
Integration/Coverage/Docs/Codestyle (integration)	1m 17s
Unittest Matrix (3.8, 42)	54s
Unittest Matrix (3.8, 42)	1m 35s
Unittest Matrix (3.9, 32)	1m 2s
Unittest Matrix (3.9, 32)	57s
Unittest Matrix (3.9, 41)	52s
Unittest Matrix (3.9, 41)	55s
Unittest Matrix (3.9, 42)	1m 1s
Unittest Matrix (3.9, 42)	1m 0s
Unittest Matrix (3.10, 32)	54s
Unittest Matrix (3.10, 32)	58s
Unittest Matrix (3.10, 41)	1m 1s
Unittest Matrix (3.10, 41)	57s
Unittest Matrix (3.10, 42)	1m 3s
Unittest Matrix (3.10, 42)	1m 2s
Unittest Matrix (3.11, 41)	52s
Unittest Matrix (3.11, 41)	53s
Unittest Matrix (3.11, 42)	1m 0s
Unittest Matrix (3.11, 42)	1m 37s
Unittest Matrix (pypy3.9, 32)	1m 9s
Unittest Matrix (pypy3.9, 32)	1m 13s
Unittest Matrix (pypy3.9, 41)	1m 9s
Unittest Matrix (pypy3.9, 41)	1s
Unittest Matrix (pypy3.9, 42)	1m 9s
Unittest Matrix (pypy3.9, 42)	1s
	36m 41s

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