Update flask-limiter requirement from <3,>=2.6 to >=2.6,<4

Updates the requirements on [flask-limiter](https://github.com/alisaifee/flask-limiter) to permit the latest version.
- [Release notes](https://github.com/alisaifee/flask-limiter/releases)
- [Changelog](https://github.com/alisaifee/flask-limiter/blob/master/HISTORY.rst)
- [Commits](https://github.com/alisaifee/flask-limiter/compare/2.6.0...3.9.2)

---
updated-dependencies:
- dependency-name: flask-limiter
  dependency-type: direct:production
...

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

pyproject.toml

@@ -27,12 +27,12 @@ classifiers = [
 
 dependencies = [
     "blinker>=1.4,<2",
-    "cachetools>=4.1,<6",
+    "cachetools>=4.1,<5",
     "debts>=0.5,<1",
     "email_validator>=1.0,<3",
     "Flask>=2,<4",
     "Flask-Babel>=1.0,<4",
-    "Flask-Cors>=3.0.8,<6",
+    "Flask-Cors>=3.0.8,<4",
     "Flask-Limiter>=2.6,<4",
     "Flask-Mail>=0.9.1,<1",
     "Flask-Migrate>=2.5.3,<5", # Not following semantic versioning (e.g. https://github.com/miguelgrinberg/flask-migrate/commit/1af28ba273de6c88544623b8dc02dd539340294b)
@@ -43,7 +43,7 @@ dependencies = [
     "itsdangerous>=2,<3",
     "Jinja2>=3,<4",
     "python-dateutil",
-    "qrcode>=7.1,<9",
+    "qrcode>=7.1,<8",
     "requests>=2.25,<3",
     "SQLAlchemy>=1.3.0,<1.5",
     "SQLAlchemy-Continuum>=1.3.12,<2", # New 1.4 changes API, see #728
@@ -53,11 +53,11 @@ dependencies = [
 [project.optional-dependencies]
 database = [
     # Python 3.11 support starts in 2.9.2
-    "psycopg2-binary>=2.9.2,<2.9.11",
+    "psycopg2-binary>=2.9.2,<2.9.9",
     "PyMySQL>=0.9,<1.2",
 ]
 dev = [
-    "ruff==0.8.4",
+    "ruff==0.6.8",
     "flake8==5.0.4",
     "isort==5.11.5",
     "vermin==1.6.0",