Bug#1103288: courier-mta: add build-dependency on ca-certificates to make build reproducible

[Jochen Sprickerhof]

Source: courier
Version: 1.3.13-11
Severity: normal
Tags: patch
X-Debbugs-Cc: reproducible-bugs at lists.alioth.debian.org
User: reproducible-builds at lists.alioth.debian.org
Usertags: environment

Hi,

courier-mta is currently non reproducible:

│ │ │ -TLS_TRUSTCERTS=/etc/ssl/certs/ca-certificates.crt
│ │ │ +TLS_TRUSTCERTS=/etc/ssl/certs

https://reproduce.debian.net/amd64/#courier-mta
https://web.archive.org/web/20250416072050/https://reproduce.debian.net/amd64/api/v0/builds/260521/diffoscope

Adding ca-certificates to the build-dependencies makes the package
reproducible. Note that ca-certificates used to be installed by default
on the buildds but will be no longer with trixie.

Cheers Jochen