Add Bandit workflow to check for potential security issues (#4)

Author: JacquesPotgieter

.github/workflows/bandit.yml

@@ -0,0 +1,55 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+# Bandit is a security linter designed to find common security issues in Python code.
+# This action will run Bandit on your codebase.
+# The results of the scan will be found under the Security tab of your repository.
+
+# https://github.com/marketplace/actions/bandit-scan is ISC licensed, by abirismyname
+# https://pypi.org/project/bandit/ is Apache v2.0 licensed, by PyCQA
+
+name: Bandit
+on:
+  push:
+    branches: [ "main" ]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: [ "main" ]
+  schedule:
+    - cron: '38 6 * * 2' # At 06:38 UTC on Tuesdays
+permissions: {}
+jobs:
+  bandit:
+    permissions:
+      actions: read
+      contents: read # for actions/checkout to fetch code
+      security-events: write # for github/codeql-action/upload-sarif to upload SARIF results
+
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+
+      - name: Bandit Scan
+        uses: shundor/python-bandit-scan@ab1d87dfccc5a0ffab88be3aaac6ffe35c10d6cd
+        with: # optional arguments
+          # exit with 0, even with results found
+          exit_zero: true # optional, default is DEFAULT
+
+          # Github token of the repository (automatically created by Github)
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }} # Needed to get PR information.
+
+          # File or directory to run bandit on
+          # path: # optional, default is .
+          # Report only issues of a given severity level or higher. Can be LOW, MEDIUM or HIGH. Default is UNDEFINED (everything)
+          # level: # optional, default is UNDEFINED
+          # Report only issues of a given confidence level or higher. Can be LOW, MEDIUM or HIGH. Default is UNDEFINED (everything)
+          # confidence: # optional, default is UNDEFINED
+          # comma-separated list of paths (glob patterns supported) to exclude from scan (note that these are in addition to the excluded paths provided in the config file) (default: .svn,CVS,.bzr,.hg,.git,__pycache__,.tox,.eggs,*.egg)
+          excluded_paths: tests,.venv
+
+          # comma-separated list of test IDs to skip
+          # skips: # optional, default is DEFAULT
+          # path to a .bandit file that supplies command line arguments
+          # ini_path: # optional, default is DEFAULT