Could not read private key with value passed in connection string

Issue description

After upgrading from version 2.0.13 to 2.0.20, the same C# code we use to pass a private key via the connection string now fails.

Example code

We build the connection string with the below C# code, which works fine with version 2.0.13.

var connectionString = $"account={account};host={snowflakeBaseURL};warehouse={c.ServerName};role={role};db={c.DatabaseName};schema={schema};user={c.UserName};authenticator=snowflake_jwt;private_key={certificate};{certPasswordField}";

Error log

Exception:
Snowflake.Data.Client.SnowflakeDbException: 'Error: Could not read private key with value passed in connection string. \n Error : incorrect private key value or private key format: use "\n" for newlines and double the equals sign. SqlState: , VendorCode: 270052, QueryId: '

InnerException:
IOException: base64 data appears to be truncated

Configuration

Driver version: 2.0.20

Issue occurs with: net472, net5.0, net6.0

Server version: 7.2.0

Client OS: Windows 10 Enterprise