Update security.yaml

Author: leoparente

.github/workflows/security.yaml

@@ -8,6 +8,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@master
+      - name: get otelcol-contrib
+        run: make getotelcol
       - name: Run Snyk to check for vulnerabilities
         uses: snyk/actions/golang@master
         continue-on-error: true # To make sure that SARIF upload gets called