Bump base64ct to v1.5.1 (RustCrypto#317)

This version added a check that encoded Base64 is canonical, i.e. that
the decoded value will round-trip back to the encoded value.

Some of the test vectors did not have this property and have been fixed.

Author: tarcieri

Cargo.lock

@@ -348,7 +348,7 @@ mod tests {
     const EXAMPLE_PASSWORD: &[u8] = b"hunter42";
 
     /// Example salt value. Don't use a static salt value!!!
-    const EXAMPLE_SALT: &str = "examplesalt";
+    const EXAMPLE_SALT: &str = "examplesaltvalue";
 
     #[test]
     fn decoded_salt_too_short() {

argon2/src/lib.rs

@@ -82,7 +82,7 @@ fn hash_simple_retains_configured_params() {
     const EXAMPLE_PASSWORD: &[u8] = b"hunter42";
 
     /// Example salt value. Don't use a static salt value!!!
-    const EXAMPLE_SALT: &str = "examplesalt";
+    const EXAMPLE_SALT: &str = "examplesaltvalue";
 
     // Non-default but valid parameters
     let t_cost = 4;