Update documentation for CMake FetchContent support

Co-authored-by: vaind <[email protected]>

Author: Copilot

README.md

@@ -46,11 +46,20 @@ jobs:
       name: Gradle Plugin
     secrets:
       api-token: ${{ secrets.CI_DEPLOY_KEY }}
+
+  # Update a CMake file with FetchContent_Declare
+  cmake-dep:
+    uses: getsentry/github-workflows/.github/workflows/updater.yml@v2
+    with:
+      path: cmake/dependencies.cmake
+      name: CMake Dependency
+    secrets:
+      api-token: ${{ secrets.CI_DEPLOY_KEY }}
 ```
 
 ### Inputs
 
-* `path`: Dependency path in the source repository, this can be either a submodule, a .properties file or a shell script.
+* `path`: Dependency path in the source repository, this can be either a submodule, a .properties file, a CMake file, or a shell script.
   * type: string
   * required: true
 * `name`: Name used in the PR title and the changelog entry.

updater/scripts/update-dependency.ps1

@@ -2,6 +2,7 @@ param(
     # Path to the dependency, which can be either of the following:
     #  - a submodule
     #  - a [.properties](https://en.wikipedia.org/wiki/.properties) file with `version` (e.g. 1.0.0) and `repo` (e.g. https://github.com/getsentry/dependency)
+    #  - a CMake file (.cmake, CMakeLists.txt) or any file containing FetchContent_Declare with `GIT_REPOSITORY` and `GIT_TAG`
     #  - a script (.sh, .ps1) that takes the executes a given action based on a given argument:
     #    * `get-version` - return the currently specified dependency version
     #    * `get-repo` - return the repository url (e.g.  https://github.com/getsentry/dependency)