Bump idna from 3.7 to 3.15 in /requirements

Bumps [idna](https://github.com/kjd/idna) from 3.7 to 3.15.
- [Release notes](https://github.com/kjd/idna/releases)
- [Changelog](https://github.com/kjd/idna/blob/master/HISTORY.md)
- [Commits](kjd/idna@v3.7...v3.15)

---
updated-dependencies:
- dependency-name: idna
  dependency-version: '3.15'
  dependency-type: indirect
...

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

Author: dependabot[bot]

requirements/dev.txt

@@ -70,7 +70,7 @@ hupper==1.12
     # via
     #   -r prod.txt
     #   pyramid
-idna==3.7
+idna==3.15
     # via
     #   -r prod.txt
     #   requests

requirements/functests.txt

@@ -74,7 +74,7 @@ hupper==1.12
     # via
     #   -r prod.txt
     #   pyramid
-idna==3.7
+idna==3.15
     # via
     #   -r prod.txt
     #   requests

requirements/lint.txt

@@ -121,7 +121,7 @@ hupper==1.12
     #   -r functests.txt
     #   -r tests.txt
     #   pyramid
-idna==3.7
+idna==3.15
     # via
     #   -r functests.txt
     #   -r tests.txt

requirements/prod.txt

@@ -40,7 +40,7 @@ h-vialib==1.3.2
     # via -r prod.in
 hupper==1.12
     # via pyramid
-idna==3.7
+idna==3.15
     # via requests
 importlib-resources==6.5.2
     # via

requirements/template.txt

@@ -22,7 +22,7 @@ click==8.1.7
     #   pip-tools
 cookiecutter==2.6.0
     # via -r template.in
-idna==3.7
+idna==3.15
     # via requests
 importlib-metadata==7.0.1
     # via pip-sync-faster
@@ -73,8 +73,6 @@ zipp==3.19.1
 
 # The following packages are considered to be unsafe in a requirements file:
 pip==25.3
-    # via
-    #   -r template.in
-    #   pip-tools
+    # via pip-tools
 setuptools==78.1.1
     # via pip-tools

requirements/tests.txt

@@ -76,7 +76,7 @@ hupper==1.12
     # via
     #   -r prod.txt
     #   pyramid
-idna==3.7
+idna==3.15
     # via
     #   -r prod.txt
     #   requests

requirements/typecheck.txt

@@ -60,7 +60,7 @@ hupper==1.12
     # via
     #   -r prod.txt
     #   pyramid
-idna==3.7
+idna==3.15
     # via
     #   -r prod.txt
     #   requests