Merge rust-bitcoin/rust-miniscript#781: feat: optimize pushbytes by r… #2125

Job	Run time
Docs - nightly toolchain (recent)	39s
Embedded	1m 30s
Docs - stable toolchain (recent)	35s
Bench - nightly toolchain (recent)	3m 0s
Format - nightly toolchain	12s
Integration tests - stable toolchain (26_0)	54s
Lint - nightly toolchain (recent)	44s
Integration tests - stable toolchain (25_2)	48s
Test - 1.63.0 toolchain (minimal)	25m 15s
Test - nightly toolchain (minimal)	14m 47s
Integration tests - stable toolchain (25_1)	1m 50s
Test - 1.63.0 toolchain (recent)	25m 13s
Test - nightly toolchain (recent)	14m 28s
Integration tests - stable toolchain (25_0)	1m 48s
Test - stable toolchain (minimal)	17m 29s
Integration tests - stable toolchain (24_2)	1m 53s
Test - stable toolchain (recent)	16m 14s
Integration tests - stable toolchain (24_1)	1m 33s
Integration tests - stable toolchain (24_0_1)	56s
Integration tests - stable toolchain (23_2)	1m 34s
Integration tests - stable toolchain (23_1)	1m 33s
Integration tests - stable toolchain (23_0)	1m 31s
Integration tests - stable toolchain (22_1)	1m 31s
Integration tests - stable toolchain (22_0)	56s
Integration tests - stable toolchain (0_21_2)	53s
Integration tests - stable toolchain (0_20_2)	58s
Integration tests - stable toolchain (0_19_1)	1m 47s
Integration tests - stable toolchain (0_18_1)	1m 12s
Integration tests - stable toolchain (0_17_1)	1m 7s
	2h 22m 50s

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