build(deps): bump base64 from 0.21.5 to 0.21.6 #3248

Job	Run time
check_features (azure)	57s
build sccache x86_64-unknown-linux-musl	5m 50s
check_features (gcs)	1m 12s
coverage ubuntu-20.04 rust nightly	4m 58s
build sccache-dist x86_64-unknown-linux-musl	4m 25s
clippy ubuntu-latest	3m 34s
check_features (gha)	57s
coverage macOS-11 rust nightly	11m 27s
build sccache aarch64-unknown-linux-musl	6m 14s
clippy macOS-latest	7m 38s
check_features (memcached)	55s
build sccache armv7-unknown-linux-musleabi	6m 12s
clippy windows-latest	4m 33s
check_features (redis)	1m 3s
build sccache i686-unknown-linux-musl	6m 26s
rustfmt ubuntu-latest	13s
check_features (s3)	58s
build sccache x86_64-apple-darwin	13m 40s
test ubuntu-20.04 rust 1.67.1	4m 47s
check_features (webdav)	58s
build sccache aarch64-apple-darwin	15m 26s
test ubuntu-22.04 rust 1.67.1 dist-server	5m 15s
build sccache x86_64-pc-windows-msvc	15m 5s
test freebsd-13.2 rust stable (ubuntu-22.04)	8m 44s
test ubuntu-20.04 rust stable	2m 58s
toml_format	12s
test ubuntu-20.04 rust beta	2m 36s
test ubuntu-20.04 rust nightly	2m 30s
test ubuntu-22.04 rust stable	3m 21s
test macOS-11 rust stable	5m 24s
test windows-2019 rust 1.67.1	6m 39s
test windows-2019 rust nightly	4m 29s
test windows-2019 rust beta	5m 21s
release	0s
	2h 44m 57s

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