Adjust CMake minimal version (#4709)

* 🔧 adjust CMake versions

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* 🔧 install OpenSSL for CMake

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* 🔧 install OpenSSL for CMake

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* 🔧 install OpenSSL for CMake

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* 🔧 install OpenSSL for CMake

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* 🔧 install OpenSSL for CMake

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* 🔨 clean up

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

* 📝 update documentation

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

---------

Signed-off-by: Niels Lohmann <mail@nlohmann.me>

docs/mkdocs/docs/community/quality_assurance.md

@@ -208,4 +208,7 @@ violations will result in a failed build.
     All library functions are exposed and usable by CMake.
 
 - [x] All library options are exposed as [CMake options](https://json.nlohmann.me/integration/cmake/) and tested.
-- [x] The library is tested against the earliest supported CMake version.
+- [x] The library is tested against relevant CMake versions:
+  - CMake 3.5 (the earliest supported)
+  - CMake 3.31.6 (the latest 3.x release)
+  - CMake 4.0.0 (a very recent release)

docs/mkdocs/docs/home/customers.md

@@ -111,6 +111,7 @@ the result of an internet search. If you know further customers of the library,
 - [**Autodesk Desktop**](https://damassets.autodesk.net/content/dam/autodesk/www/Company/legal-notices-trademarks/autodesk-desktop-platform-components/internal-autodesk-components-web-page-2023.pdf), a software platform developed by Autodesk for creating and managing desktop applications and services
 - [**Check Point**](https://www.checkpoint.com/about-us/copyright-and-trademarks/): a cybersecurity company specializing in threat prevention and network security solutions, offering a range of products designed to protect enterprises from cyber threats and ensure data integrity
 - [**Microsoft Office for Mac**](https://officecdnmac.microsoft.com/pr/legal/mac/OfficeforMacAttributions.html), a suite of productivity applications developed by Microsoft for macOS, including tools for word processing, spreadsheets, and presentations
+- [**Microsoft Teams**](https://www.microsoft.com/microsoft-teams/), a team collaboration application offering workspace chat and video conferencing, file storage, and integration of proprietary and third-party applications and services
 - [**Nexthink Infinity**](https://docs.nexthink.com/legal/services-terms/experience-open-source-software-licenses/infinity-2022.8-software-licenses): a digital employee experience management platform for monitoring and improving IT performance
 - [**Sophos Connect Client**](https://docs.sophos.com/nsg/licenses/SophosConnect/SophosConnectAttribution.html): a secure VPN client from Sophos that allows remote users to connect to their corporate network, ensuring secure access to resources and data
 - [**Stonebranch**](https://stonebranchdocs.atlassian.net/wiki/spaces/UA77/pages/799545647/Licenses+for+Third-Party+Libraries): a cloud-based cybersecurity solution that integrates backup, disaster recovery, and cybersecurity features to protect data and ensure business continuity for organizations

docs/mkdocs/docs/integration/cmake.md

@@ -15,7 +15,7 @@ and use the namespaced imported target from the generated package configuration:
 !!! example
 
     ```cmake title="CMakeLists.txt"
-    cmake_minimum_required(VERSION 3.1)
+    cmake_minimum_required(VERSION 3.5)
     project(ExampleProject LANGUAGES CXX)
     
     find_package(nlohmann_json 3.11.3 REQUIRED)
@@ -35,7 +35,7 @@ To embed the library directly into an existing CMake project, place the entire s
 !!! example
 
     ```cmake title="CMakeLists.txt"
-    cmake_minimum_required(VERSION 3.1)
+    cmake_minimum_required(VERSION 3.5)
     project(ExampleProject LANGUAGES CXX)
 
     # If you only include this third party in PRIVATE source files, you do not need to install it