fix: remove invalid 'run' key from install-curl step in cmake workflow

The test-ubuntu-curl job had both 'uses' and 'run' on the same step,
which is invalid in GitHub Actions. This was introduced in commit
5b8bbee (PR #500). The install-curl composite action already handles
apt-get installation internally, so the 'run' key was redundant and
caused the entire workflow to fail with 0 jobs.

Co-Authored-By: rlamb@launchdarkly.com <kingdewman@gmail.com>

Author: devin-ai-integration[bot]

.github/workflows/cmake.yml

@@ -30,7 +30,6 @@ jobs:
       - uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955
       - uses: ./.github/actions/install-curl
         id: install-curl
-        run: sudo apt-get update && sudo apt-get install -y libcurl4-openssl-dev
       - uses: ./.github/actions/cmake-test
         env:
           CURL_ROOT: ${{ steps.install-curl.outputs.CURL_ROOT }}