Bump base64 from 0.21.3 to 0.21.4 (#952)

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Cargo.lock

@@ -39,7 +39,7 @@ ahash = "0.8.0"
 url = "2.4.1"
 # idna is already required by url, added here to be explicit
 idna = "0.4.0"
-base64 = "0.21.3"
+base64 = "0.21.4"
 num-bigint = "0.4.4"
 python3-dll-a = "0.2.7"
 uuid = "1.4.1"