rainloop-community: use cacert bundle instead of vendored CA bundle

Assisted-by: Claude Code (Claude Opus 5.5) with patchix

pkgs/servers/rainloop/default.nix

@@ -2,6 +2,7 @@
   lib,
   stdenv,
   fetchurl,
+  cacert,
   unzip,
   writeText,
   dos2unix,
@@ -59,6 +60,9 @@ let
       installPhase = ''
         mkdir $out
         cp -r rainloop/* $out
+        rm $out/rainloop/v/${version}/app/libraries/tmhOAuth/cacert.pem
+        ln -s ${cacert}/etc/ssl/certs/ca-bundle.crt \
+          $out/rainloop/v/${version}/app/libraries/tmhOAuth/cacert.pem
         rm -rf $out/data
         cp ${includeScript} $out/include.php
         mkdir $out/data