fix: remove docker libssl upgrade

[vsukhin]

Pull request description

Remove libssl upgrade for latest alpine Docker image, because it alreday contains libssl1.1
It fixes issue #699

Proof:

docker run -it --rm alpine:latest ash
/ # apk --no-cache add ca-certificates libssl1.1
fetch https://dl-cdn.alpinelinux.org/alpine/v3.15/main/x86_64/APKINDEX.tar.gz
fetch https://dl-cdn.alpinelinux.org/alpine/v3.15/community/x86_64/APKINDEX.tar.gz
(1/1) Installing ca-certificates (20191127-r7)
Executing busybox-1.34.1-r3.trigger
Executing ca-certificates-20191127-r7.trigger
OK: 6 MiB in 15 packages
/ # cd /lib
/lib # ls
apk                    libapk.so.3.12.0       libssl.so.1.1          mdev
firmware               libc.musl-x86_64.so.1  libz.so.1              modules-load.d
ld-musl-x86_64.so.1    libcrypto.so.1.1       libz.so.1.2.11         sysctl.d
/lib # strings /lib/libssl.so.1.1  | grep "OpenSSL 1.1.1"
OpenSSL 1.1.1l  24 Aug 2021

Checklist (choose whats happened)

• breaking change! (describe)
• tested locally
• tested on cluster
• added new dependencies
• updated the docs
• added a test

Breaking changes

Changes

Fixes

Remove libssl upgrade for Docker alpine image to libssl1.1

[exu]

LGTM!