chore: Bump msrv to 1.75 #3833

Job	Run time
clippy	49s
rustfmt	6s
codegen	24s
check (ubuntu-latest)	2m 14s
Interop Tests (ubuntu-latest)	33s
check (macOS-latest)	2m 3s
msrv	1m 9s
Interop Tests (macOS-latest)	39s
check (windows-latest)	4m 20s
Interop Tests (windows-latest)	3m 18s
semver	1m 3s
test (ubuntu-latest)	2m 52s
test (macOS-latest)	2m 20s
deny	13s
external-types	40s
test (windows-latest)	4m 47s
udeps	3m 47s
	31m 17s

Provide feedback