Fix: libsql uses base64 without padding (char '=') to return blob values

[luisfvieirasilva]

libsql uses base64 without padding (char '=') to return blob values

References: https://en.wikipedia.org/wiki/Base64#Output_padding https://pkg.go.dev/encoding/base64#Encoding.WithPadding

[luisfvieirasilva]

@haaawk