picotls: update to 2024.04.08

[barracuda156]

Description

Update

Type(s)

• bugfix
• enhancement
• security fix

Tested on

macOS 10.6
Xcode 3.2

Verification

Have you

• followed our Commit Message Guidelines?
• squashed and minimized your commits?
• checked that there aren't other open pull requests for the same change?
• referenced existing tickets on Trac with full URL in commit message?
• checked your Portfile with port lint --nitpick?
• tried existing tests with sudo port test?
• tried a full install with sudo port -vst install?
• tested basic functionality of all binary files?
• checked that the Portfile's most important variants haven't been broken?

[ryandesign]

Fails on all runners:

lib/mbedtls_sign.c:619:16: error: call to undeclared function 'mbedtls_pk_load_file'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
    if ((ret = mbedtls_pk_load_file(pem_fname, &buf, &n)) != 0) {
               ^

[barracuda156]

Fails on all runners:

lib/mbedtls_sign.c:619:16: error: call to undeclared function 'mbedtls_pk_load_file'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]

    if ((ret = mbedtls_pk_load_file(pem_fname, &buf, &n)) != 0) {

               ^

h2o/picotls#518 (comment)

I will close this now and make a new one once the issue is addressed by the upstream.