build(deps): update phpmailer/phpmailer requirement from 6.3.0 to 6.4.0 (#1030)
build(deps): update phpmailer/phpmailer requirement from 6.3.0 to 6.4.0 (#1030)

Updates the requirements on phpmailer/phpmailer to permit the latest version.

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>

Co-authored-by: dependabot[bot] <1c358da00a777d4e9898c1280ab801e2df165188@users.noreply.github.com>
smrealms/smr,smrealms/smr,hemberger/smr,hemberger/smr,hemberger/smr,hemberger/smr,smrealms/smr