Update Alpine to 3.16

Dockerfile

@@ -1,6 +1,8 @@
 # https://aws.amazon.com/blogs/aws/new-for-aws-lambda-container-image-support/
 ARG RUNTIME_VERSION="3.9"
-ARG DISTRO_VERSION="3.15"
+
+# libexec is missing from >=3.17
+ARG DISTRO_VERSION="3.16"
 
 # Stage 1 - bundle base image + runtime
 FROM python:${RUNTIME_VERSION}-alpine${DISTRO_VERSION} AS python-alpine
@@ -22,11 +24,11 @@ RUN apk upgrade -U --available --no-cache && \
     libtool \
     autoconf \
     automake \
-    libexecinfo-dev \
     make \
     cmake \
     libcurl \
     libffi-dev \
+    libexecinfo-dev \
     openssl-dev
     # cargo