[php 8] Update pear/mail to 1.5

[demeritcowboy]

Overview

Some php 8 warnings. See pear/Mail@368c52f

Before

preg_replace doesn't like null

After

preg_replace ok with '', until php decides that's not ok either and then we have to update again.

Technical Details

You won't see these in unit tests mostly because the mailer doesn't use smtp. In another environment where tests do, this comes up 1000s of times in the core tests. I couldn't figure out where they were coming from since locally it doesn't use smtp either, and then they magically went away today, and tracked it down to this being released today.

Comments

This also includes pear/Mail@66ac6d1 which is the only thing that stood out from: pear/Mail@v1.4.1...v1.5.0, and it looks like @MegaphoneJon liked it. I'll note also that as of today new drupal 9 installs will automatically get 1.5 regardless of the change here.

[civibot]

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[MegaphoneJon]

@demeritcowboy I almost submitted this today - but then I thought it was unnecessary because the version was ^1.4. But I guess a) we should be explicit, b) we still need to update composer.lock. Anyway, you can consider this reviewed - I also looked over all the commits since 1.4.1 and have it running in production on 1-2 D9 sites already (plus one WP site where just today I needed the "use STARTTLS on unauthenticated connections" functionality).

[demeritcowboy]

jenkins retest this please - looks like mysql weirdness

[demeritcowboy]

Test fail is that unrelated date-sensitive test fail that's been coming up. Thanks @MegaphoneJon @seamuslee001