Fix Shellcheck SC2129: Consider using {..} >> file
Fix Shellcheck SC2129: Consider using {..} >> file

Consider using { cmd1; cmd2; } >> file instead of individual redirects.

https://github.com/koalaman/shellcheck/wiki/SC2129

Signed-off-by: Dan Callahan <b611df31359e9ab1bf729fd0aaebf4ab4b2ecf3e@element.io>

matrix-org/synapse,matrix-org/synapse,matrix-org/synapse,matrix-org/synapse,matrix-org/synapse,matrix-org/synapse