Bump follow-redirects from 1.15.2 to 1.15.4 in /docs #400

Job	Run time
base-linting	1m 52s
build_rlang_kernels (4.3.0)	53m 33s
build_deno_kernels (1.37)	1m 41s
build_python_kernels (3.9, base)	3m 48s
build_python_kernels (3.9, base-gpu)	10m 10s
build_rust_kernels (1.70.0)	32s
create_release	0s
Run pre-commit hooks	28s
build_python_kernels (3.10, base)	3m 29s
build_python_kernels (3.10, base-gpu)	10m 14s
	1h 25m 47s

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