[Snyk] Security upgrade ubuntu from bionic to 18.04#7

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StarLord07 wants to merge 1 commit intomasterfrom snyk-fix-6f6a79390742a42d118e8abcd65b4f75

+1-1

Commits on Apr 19, 2023

fix: contrib/ci-horizen/dockerfiles/amd64/linux/ubuntu_bionic/Dockerfile to reduce vulnerabilities
snyk-bot
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