gh-118673: Remove shebang and executable bits from tarfile. #15

Job	Run time
i686-pc-windows-msvc/msvc (Debug)	18m 29s
i686-pc-windows-msvc/msvc (Release)	22m 56s
x86_64-pc-windows-msvc/msvc (Debug)	20m 16s
x86_64-pc-windows-msvc/msvc (Release)	27m 3s
aarch64-pc-windows-msvc/msvc (Debug)	5m 9s
aarch64-pc-windows-msvc/msvc (Release)	5m 34s
x86_64-apple-darwin/clang (Debug)	16m 39s
x86_64-apple-darwin/clang (Release)	16m 10s
aarch64-apple-darwin/clang (Debug)	9m 22s
aarch64-apple-darwin/clang (Release)	14m 5s
x86_64-unknown-linux-gnu/gcc (Debug)	7m 51s
x86_64-unknown-linux-gnu/gcc (Release)	9m 18s
x86_64-unknown-linux-gnu/clang (Debug)	8m 21s
x86_64-unknown-linux-gnu/clang (Release)	8m 34s
aarch64-unknown-linux-gnu/gcc (Debug)	1h 15m 20s
aarch64-unknown-linux-gnu/gcc (Release)	54m 19s
aarch64-unknown-linux-gnu/clang (Debug)	1h 11m 7s
aarch64-unknown-linux-gnu/clang (Release)	37m 45s
	7h 8m 18s

Provide feedback