gha: Add pandoc as a dependency for static checks

To avoid the failure of not finding pandoc command this PR adds that
package as a dependency for static checks.

Fixes #8041

Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>

.github/workflows/static-checks.yaml

@@ -187,7 +187,7 @@ jobs:
           echo "/usr/local/go/bin" >> $GITHUB_PATH
       - name: Install system dependencies
         run: |
-          sudo apt-get -y install moreutils hunspell
+          sudo apt-get -y install moreutils hunspell pandoc
       - name: Run check
         run: |
           export PATH=${PATH}:${GOPATH}/bin