Bump caldav from 1.3.9 to 1.4.0 (#3476)

Bumps [caldav](https://github.com/python-caldav/caldav) from 1.3.9 to 1.4.0.
- [Release notes](https://github.com/python-caldav/caldav/releases)
- [Changelog](https://github.com/python-caldav/caldav/blob/master/CHANGELOG.md)
- [Commits](https://github.com/python-caldav/caldav/compare/v1.3.9...v1.4.0)

---
updated-dependencies:
- dependency-name: caldav
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

dev-requirements.txt

@@ -23,7 +23,7 @@ bcrypt==4.2.1
     # via modoboa (pyproject.toml)
 black==25.1.0
     # via modoboa (pyproject.toml)
-caldav==1.3.9
+caldav==1.4.0
     # via modoboa (pyproject.toml)
 certifi==2025.1.31
     # via requests

ldap-requirements.txt

@@ -19,7 +19,7 @@ attrs==25.1.0
     #   referencing
 bcrypt==4.2.1
     # via modoboa (pyproject.toml)
-caldav==1.3.9
+caldav==1.4.0
     # via modoboa (pyproject.toml)
 certifi==2025.1.31
     # via requests

mysql-requirements.txt

@@ -19,7 +19,7 @@ attrs==25.1.0
     #   referencing
 bcrypt==4.2.1
     # via modoboa (pyproject.toml)
-caldav==1.3.9
+caldav==1.4.0
     # via modoboa (pyproject.toml)
 certifi==2025.1.31
     # via requests

postgresql-requirements.txt

@@ -19,7 +19,7 @@ attrs==25.1.0
     #   referencing
 bcrypt==4.2.1
     # via modoboa (pyproject.toml)
-caldav==1.3.9
+caldav==1.4.0
     # via modoboa (pyproject.toml)
 certifi==2025.1.31
     # via requests

pyproject.toml

@@ -79,7 +79,7 @@ dependencies = [
         # User
         "drf-nested-routers",
         "vobject",
-        "caldav==1.3.9"
+        "caldav==1.4.0"
 ]
 [project.optional-dependencies]
 dev = [

requirements.txt

@@ -19,7 +19,7 @@ attrs==25.1.0
     #   referencing
 bcrypt==4.2.1
     # via modoboa (pyproject.toml)
-caldav==1.3.9
+caldav==1.4.0
     # via modoboa (pyproject.toml)
 certifi==2025.1.31
     # via requests

test-requirements.txt

@@ -25,7 +25,7 @@ bcrypt==4.2.1
     # via modoboa (pyproject.toml)
 cachetools==5.5.1
     # via tox
-caldav==1.3.9
+caldav==1.4.0
     # via modoboa (pyproject.toml)
 certifi==2025.1.31
     # via requests