Use apt-get over apt

apt-get seems to be recommended over apt for scripting purposes. apt is designed for humans and does not guarantee backwards compatibility.
See https://manpages.debian.org/stretch/apt/apt.8.en.html

Author: Exanite

sources/OpenAL/Soft.Native/build-linux-arm.sh

@@ -12,8 +12,8 @@ if [[ ! -z ${GITHUB_ACTIONS+x} ]]; then
         exit
     else
         dpkg --add-architecture armhf
-        apt update
-        apt install -y \
+        apt-get update
+        apt-get install -y \
             git cmake python3 \
             libasound2-dev:armhf libpulse-dev:armhf libsoundio-dev:armhf libsndfile1-dev:armhf \
             libmysofa-dev:armhf qtbase5-dev:armhf libdbus-1-dev:armhf libjack-dev:armhf portaudio19-dev:armhf \

sources/OpenAL/Soft.Native/build-linux-arm64.sh

@@ -12,8 +12,8 @@ if [[ ! -z ${GITHUB_ACTIONS+x} ]]; then
         exit
     else
         dpkg --add-architecture arm64
-        apt update
-        apt install -y \
+        apt-get update
+        apt-get install -y \
             git cmake python3 \
             libasound2-dev:arm64 libpulse-dev:arm64 libsoundio-dev:arm64 libsndfile1-dev:arm64 \
             libmysofa-dev:arm64 qtbase5-dev:arm64 libdbus-1-dev:arm64 libjack-dev:arm64 portaudio19-dev:arm64 \

sources/OpenAL/Soft.Native/build-linux-x64.sh

@@ -2,8 +2,8 @@
 
 # Dependencies
 if [[ ! -z ${GITHUB_ACTIONS+x} ]]; then
-    sudo apt update
-    sudo apt install -y \
+    sudo apt-get update
+    sudo apt-get install -y \
         git cmake python3 build-essential \
         libasound2-dev:amd64 libpulse-dev:amd64 libsoundio-dev:amd64 libsndfile1-dev:amd64 \
         libmysofa-dev:amd64 qtbase5-dev:amd64 libdbus-1-dev:amd64 libjack-dev:amd64 portaudio19-dev:amd64 \

sources/SDL/Native/build-linux-arm.sh

@@ -11,8 +11,8 @@ if [[ ! -z ${GITHUB_ACTIONS+x} ]]; then
         $docker run --platform linux/amd64 -e SILKDOTNET_DockerBuild=1 -e GITHUB_ACTIONS=1 -v $(readlink -f ../../../):/data debian bash -c "cd /data/sources/SDL/Native && ./build-linux-arm.sh"
         exit
     else
-        apt update
-        apt install -y python3
+        apt-get update
+        apt-get install -y python3
         ../../../eng/native/buildsystem/download-zig.py
         export PATH="$PATH:$(readlink -f "../../../eng/native/buildsystem/zig")"
 

sources/SDL/Native/build-linux-arm64.sh

@@ -11,8 +11,8 @@ if [[ ! -z ${GITHUB_ACTIONS+x} ]]; then
         $docker run --platform linux/amd64 -e SILKDOTNET_DockerBuild=1 -e GITHUB_ACTIONS=1 -v $(readlink -f ../../../):/data debian bash -c "cd /data/sources/SDL/Native && ./build-linux-arm64.sh"
         exit
     else
-        apt update
-        apt install -y python3
+        apt-get update
+        apt-get install -y python3
         ../../../eng/native/buildsystem/download-zig.py
         export PATH="$PATH:$(readlink -f "../../../eng/native/buildsystem/zig")"