PPP-73309 / PPS-19392: SmarterMail "Login failure: Token revoked" - hotfix DLLs

Build: plesk-aws-bootstrap #34455 (PLESK_18_0_81 + PR https://github.com/webpros-plesk/plesk/pull/4932)
FileVersion: 18.0.81.34455, ProductVersion: 18.0.81.0, x86 (32-bit), not signed.
For Plesk Obsidian 18.0.81 on Windows only.

Files:
- smartermailprovider.dll  - mail server "smartermail" (local SmarterMail)
- smremoteprovider.dll     - mail server "smartermail_remote" (remote SmarterMail)
- SMAntivirusProvider.dll  - antivirus "smartermailav"
- smspamprov.dll           - spam filter "smarterspamassassin"
SHA256 sums are in SHA256SUMS.txt.

Install:
1. Make sure that no process holds the DLLs:
   tasklist /m smartermailprovider.dll
   tasklist /m smremoteprovider.dll
2. Make a backup copy of the 4 DLLs in %plesk_dir%admin\bin
   (default C:\Program Files (x86)\Plesk\admin\bin).
3. Copy the 4 DLLs from this archive to %plesk_dir%admin\bin.
4. Create a mailbox in Plesk. The mailbox must be created without the "Token revoked" error.

Rollback: copy the backup DLLs back to %plesk_dir%admin\bin.

A Plesk update replaces these files.
