fix(ci): use CARGO_HOME instead of hardcoded path in build scripts

scripts/build.sh

@@ -42,7 +42,7 @@ if [[ "$env_source" != "true" ]]; then
     exit 1
 fi
 
-source "$HOME/.cargo/env"
+source "$CARGO_HOME/env"
 
 # We publish the artifacts into a local Maven repository instead of using the
 # auto-publication workflow because the latter does not work for Gradle
@@ -134,4 +134,4 @@ if [[ "$build_type" == "apk" ]]; then
 elif [[ "$build_type" == "bundle" ]]; then
     gradle :app:bundleRelease -Paab
 fi
-popd
+popd

scripts/prebuild.sh

@@ -114,7 +114,7 @@ fi
 echo "...libclang dir set to ${libclang}"
 
 # shellcheck disable=SC1090,SC1091
-source "$HOME/.cargo/env"
+source "$CARGO_HOME/env"
 rustup default 1.83.0
 rustup target add thumbv7neon-linux-androideabi
 rustup target add armv7-linux-androideabi