Update msrv #547

Job	Run time
Build docs	1m 0s
Cargo fmt and clippy	1m 1s
cargo-audit	2m 43s
set-rust-versions	3s
Test Sqlite (stable)	2m 9s
test-macros-and-cli (stable, windows-latest)	3m 53s
Test Sqlite (nightly)	1m 56s
Test mysql-async (stable)	1m 12s
test-macros-and-cli (stable, ubuntu-latest)	1m 40s
Test mysql (stable)	2m 17s
Test Sqlite (1.83)	2m 8s
Test mysql-async (nightly)	1m 21s
test-macros-and-cli (nightly, windows-latest)	5m 9s
Test mysql (nightly)	2m 31s
Test mysql-async (1.83)	1m 17s
test-macros-and-cli (nightly, ubuntu-latest)	1m 55s
Test mysql (1.83)	2m 30s
test-macros-and-cli (1.83, windows-latest)	4m 19s
Test postgres (stable)	1m 41s
test-macros-and-cli (1.83, ubuntu-latest)	1m 45s
Test postgres (nightly)	1m 52s
Test tiberius (stable)	1m 42s
Test tokio-postgres (stable)	52s
Test postgres (1.83)	1m 54s
Test tiberius (nightly)	1m 52s
Test tokio-postgres (nightly)	1m 3s
Test tiberius (1.83)	1m 57s
Test tokio-postgres (1.83)	57s
CI is green	0s
	54m 39s

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