Replace all HTTP URLs with HTTPS ones

[izzyleung]

Fixes #79

Verification

Verified with a dummy build with the following command

$ podman run -it --rm -v $PWD:/root -w /root --name al2023 amazonlinux:2023 bash
bash-5.2# yum install -y make
...
Installed:
  gc-8.0.4-5.amzn2023.0.2.aarch64       guile22-2.2.7-2.amzn2023.0.3.aarch64       libtool-ltdl-2.4.7-1.amzn2023.0.3.aarch64       make-1:4.3-5.amzn2023.0.2.aarch64

Complete!
bash-5.2# make NO_SUDO=1 MAINVERSION=3.0
# Check if the prereqs are there before trying to sudo 
...
Wrote: /root/rpmbuild/RPMS/aarch64/haproxy-3.0.14-1.amzn2023.aarch64.rpm
Executing(%clean): /bin/sh -e /var/tmp/rpm-tmp.F1putG
+ umask 022
+ cd /root/rpmbuild/BUILD
+ cd haproxy-3.0.14
+ '[' /root/rpmbuild/BUILDROOT/haproxy-3.0.14-1.amzn2023.aarch64 '!=' / ']'
+ /usr/bin/rm -rf /root/rpmbuild/BUILDROOT/haproxy-3.0.14-1.amzn2023.aarch64
+ RPM_EC=0
++ jobs -p
+ exit 0