general: release 0.8.13 #479

Job	Run time
set-rust-versions	3s
cargo-audit	15s
Cargo fmt and clippy	1m 33s
Build docs	1m 12s
test-macros-and-cli (stable, windows-latest)	3m 46s
test-macros-and-cli (stable, ubuntu-latest)	2m 1s
Test mysql (stable)	2m 14s
Test mysql-async (stable)	1m 13s
Test postgres (stable)	1m 48s
test-macros-and-cli (nightly, windows-latest)	4m 36s
Test mysql (nightly)	2m 7s
Test mysql-async (nightly)	1m 14s
Test postgres (nightly)	1m 54s
test-macros-and-cli (nightly, ubuntu-latest)	2m 5s
Test mysql (1.75)	2m 14s
Test mysql-async (1.75)	1m 10s
Test postgres (1.75)	2m 8s
test-macros-and-cli (1.75, windows-latest)	4m 21s
test-macros-and-cli (1.75, ubuntu-latest)	2m 6s
Test Sqlite (stable)	1m 42s
Test tiberius (stable)	1m 52s
Test tokio-postgres (stable)	53s
Test Sqlite (nightly)	1m 43s
Test tiberius (nightly)	2m 4s
Test tokio-postgres (nightly)	1m 3s
Test Sqlite (1.75)	1m 49s
Test tiberius (1.75)	1m 55s
Test tokio-postgres (1.75)	54s
CI is green	1s
	51m 56s

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