unix: add Python 3.9 to release scripts

3.9.0 was just released. Let's build 3.9 as part of the release scripts.

Author: indygreg

release-linux.sh

@@ -9,6 +9,10 @@ export PYBUILD_RELEASE_TAG=$(date --utc '+%Y%m%dT%H%M')
 
 ./build-linux.py --target-triple x86_64-unknown-linux-gnu --python cpython-3.8 --optimizations debug --libressl
 ./build-linux.py --target-triple x86_64-unknown-linux-gnu --python cpython-3.8 --optimizations pgo --libressl
+./build-linux.py --target-triple x86_64-unknown-linux-gnu --python cpython-3.9 --optimizations debug --libressl
+./build-linux.py --target-triple x86_64-unknown-linux-gnu --python cpython-3.9 --optimizations pgo --libressl
 
 ./build-linux.py --target-triple x86_64-unknown-linux-musl --python cpython-3.8 --optimizations debug --libressl
 ./build-linux.py --target-triple x86_64-unknown-linux-musl --python cpython-3.8 --optimizations noopt --libressl
+./build-linux.py --target-triple x86_64-unknown-linux-musl --python cpython-3.9 --optimizations debug --libressl
+./build-linux.py --target-triple x86_64-unknown-linux-musl --python cpython-3.9 --optimizations noopt --libressl

release-macos.sh

@@ -9,3 +9,6 @@ export PYBUILD_RELEASE_TAG=$(date -u '+%Y%m%dT%H%M')
 
 ./build-macos.py --python cpython-3.8 --optimizations debug
 ./build-macos.py --python cpython-3.8 --optimizations pgo
+
+./build-macos.py --python cpython-3.9 --optimizations debug
+./build-macos.py --python cpython-3.9 --optimizations pgo