Update qrcode requirement from <8,>=7.1 to >=7.1,<9

Updates the requirements on [qrcode](https://github.com/lincolnloop/python-qrcode) to permit the latest version.
- [Changelog](https://github.com/lincolnloop/python-qrcode/blob/main/CHANGES.rst)
- [Commits](lincolnloop/python-qrcode@v7.1...v8.0)

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

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pyproject.toml

@@ -43,7 +43,7 @@ dependencies = [
     "itsdangerous>=2,<3",
     "Jinja2>=3,<4",
     "python-dateutil",
-    "qrcode>=7.1,<8",
+    "qrcode>=7.1,<9",
     "requests>=2.25,<3",
     "SQLAlchemy>=1.3.0,<1.5",
     "SQLAlchemy-Continuum>=1.3.12,<2", # New 1.4 changes API, see #728