feat: Add markdown type in Mimes #14534

Job	Run time
Setup PHP Version for Code Coverage	3s
Others (8.5) / Sanity Tests	3m 1s
Others (8.3) / Sanity Tests	2m 41s
Others (8.2) / Sanity Tests	4m 4s
Others (8.4) / Sanity Tests	2m 57s
SeparateProcess (8.5) / tests	3m 22s
SeparateProcess (8.2) / tests	3m 32s
CacheLive (8.4) / Cache Live Tests	2m 20s
SeparateProcess (8.3) / tests	3m 25s
SeparateProcess (8.4) / tests	3m 31s
CacheLive (8.2) / Cache Live Tests	2m 31s
CacheLive (8.3) / Cache Live Tests	2m 18s
CacheLive (8.5) / Cache Live Tests	2m 17s
DatabaseLive (8.4, OCI8, 8.0) / tests	6m 47s
DatabaseLive (8.2, OCI8, 8.0) / tests	7m 45s
DatabaseLive (8.5, SQLSRV, 8.0) / tests	6m 24s
DatabaseLive (8.5, MySQLi, 8.0) / tests	5m 18s
DatabaseLive (8.4, MySQLi, 8.0) / tests	4m 33s
DatabaseLive (8.5, Postgre, 8.0) / tests	2m 40s
DatabaseLive (8.3, SQLite3, 8.0) / tests	2m 20s
DatabaseLive (8.3, OCI8, 8.0) / tests	6m 56s
DatabaseLive (8.2, SQLite3, 8.0) / tests	3m 11s
DatabaseLive (8.4, SQLite3, 8.0) / tests	2m 5s
DatabaseLive (8.3, MySQLi, 8.0) / tests	4m 17s
DatabaseLive (8.2, MySQLi, 8.0) / tests	6m 44s
DatabaseLive (8.2, MySQLi, 5.7) / tests	3m 48s
DatabaseLive (8.2, Postgre, 8.0) / tests	3m 35s
DatabaseLive (8.3, SQLSRV, 8.0) / tests	6m 0s
DatabaseLive (8.4, SQLSRV, 8.0) / tests	5m 40s
DatabaseLive (8.3, Postgre, 8.0) / tests	2m 50s
DatabaseLive (8.5, SQLite3, 8.0) / tests	2m 23s
DatabaseLive (8.4, Postgre, 8.0) / tests	3m 4s
DatabaseLive (8.5, OCI8, 8.0) / tests	6m 28s
DatabaseLive (8.2, SQLSRV, 8.0) / tests	6m 45s
Upload coverage results to Coveralls / coveralls	49s
	2h 16m 24s

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