Update base64 to 0.22

Cargo.toml

@@ -22,7 +22,7 @@ rust-version = "1.73.0"
 [dependencies]
 serde_json = "1.0"
 serde = { version = "1.0", features = ["derive"] }
-base64 = "0.21.0"
+base64 = "0.22"
 # For PEM decoding
 pem = { version = "3", optional = true }
 simple_asn1 = { version = "0.6", optional = true }