update poetry and banners

Signed-off-by: Maximilian Deubel <maximilian.deubel@nordicsemi.no>

Author: maxd-nordic

.github/workflows/python.yml

@@ -11,6 +11,7 @@ on:
 env:
   REGISTRY_NAME: ${{ vars.REGISTRY_NAME }}
   REGISTRY_URI: ${{ vars.REGISTRY_URI }}
+  POETRY_VERSION: 2.2.1
 
 jobs:
   build:
@@ -30,7 +31,7 @@ jobs:
           python-version: ${{ matrix.python-version }}
       - name: Install poetry
         run: |
-          curl -sSL https://install.python-poetry.org | POETRY_VERSION=1.4.2 python3 -
+          curl -sSL https://install.python-poetry.org | POETRY_VERSION=$POETRY_VERSION python3 -
       - name: Install dependencies
         run: |
           poetry install
@@ -61,7 +62,7 @@ jobs:
           python-version: 3.13
       - name: Install poetry
         run: |
-          curl -sSL https://install.python-poetry.org | POETRY_VERSION=1.4.2 python3 -
+          curl -sSL https://install.python-poetry.org | POETRY_VERSION=$POETRY_VERSION python3 -
       - name: Update version in pyproject.toml
         run: |
           echo $GITHUB_REF_NAME | sed 's/^v//' | xargs poetry version

README.md

@@ -1,5 +1,10 @@
 # nrfcredstore
 
+
+[![PyPI version](https://img.shields.io/pypi/v/nrfcredstore)](https://pypi.org/project/nrfcredstore/)
+![License](https://img.shields.io/pypi/l/nrfcredstore)
+![Python versions](https://img.shields.io/pypi/pyversions/nrfcredstore)
+
 nrfcredstore is a command line tool that simplifies managing credentials stored in Nordic Semiconductor modems, like the [nRF9151](https://www.nordicsemi.com/Products/nRF9151). The typical use case of nrfcredstore is to automate the provisioning of cloud certificates that are stored securely in the modem.
 
 ## Install