Use https instead of http

Author: mat007

.github/workflows/ci.yml

@@ -65,7 +65,7 @@ jobs:
             apt-get -o Acquire::Retries=$NET_RETRY_COUNT update
             apt-get -o Acquire::Retries=$NET_RETRY_COUNT install -y sudo software-properties-common curl lsb-release
             # Need (newer) git & cmake, and the older Ubuntu container may require requesting the key manually using port 80
-            curl -sSL --retry ${NET_RETRY_COUNT:-5} 'http://keyserver.ubuntu.com/pks/lookup?op=get&search=0xE1DD270288B4E6030699E45FA1715D88E1DF1F24' | sudo gpg --dearmor > /etc/apt/trusted.gpg.d/git-core_ubuntu_ppa.gpg
+            curl -sSL --retry ${NET_RETRY_COUNT:-5} 'https://keyserver.ubuntu.com/pks/lookup?op=get&search=0xE1DD270288B4E6030699E45FA1715D88E1DF1F24' | sudo gpg --dearmor > /etc/apt/trusted.gpg.d/git-core_ubuntu_ppa.gpg
             for i in {1..${NET_RETRY_COUNT:-5}}; do sudo -E add-apt-repository -y ppa:git-core/ppa && break || sleep 10; done
             curl -sSL --retry ${NET_RETRY_COUNT:-5} 'https://apt.kitware.com/keys/kitware-archive-latest.asc' | sudo gpg --dearmor > /etc/apt/trusted.gpg.d/kitware-archive-latest.gpg
             for i in {1..${NET_RETRY_COUNT:-5}}; do sudo -E add-apt-repository -y "deb https://apt.kitware.com/ubuntu/ $(lsb_release -cs) main" && break || sleep 10; done