Add Sectigo R46/E46 Roots

This case involves the inclusion of four Sectigo root certificates: Sectigo Public Email Protection Root E46, Sectigo Public Email Protection Root R46, Sectigo Public Server Authentication Root E46, and Sectigo Public Server Authentication Root R46. The request was approved following a public discussion that concluded on June 9, 2023. The approval was formally communicated by Kathleen Wilson on June 26, 2023, and subsequent bugs were filed to implement the changes. The case is now resolved.

1. 2023-02-16 Bug created
2. 2023-04-24 Public discussion began
3. 2023-06-09 Public discussion concluded
4. 2023-06-26 Request approved
5. 2023-06-26 Implementation bugs filed