Bump python from 1981920 to d73088c

Bumps python from `1981920` to `d73088c`.

---
updated-dependencies:
- dependency-name: python
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Dockerfile

@@ -4,7 +4,7 @@
 #
 
 # Using python:3.9-slim
-FROM python@sha256:1981920906ec577fb1a83bffca080ad659692688e80aee4cfe58d4642ac108e8
+FROM python@sha256:d73088ce13d5a1eec1dd05b47736041ae6921d08d2f240035d99642db98bc8d4
 
 COPY requirements.txt /nca/
 RUN python -m pip install -U pip wheel setuptools && pip install -r /nca/requirements.txt