Version-pin workflows in tool-Nextflow-action (#255)

Author: nwiltsie

.github/workflows/deploy-docs.yaml

@@ -18,4 +18,4 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Deploy docs
-        uses: uclahs-cds/tool-Nextflow-action/build-and-deploy-docs@main
+        uses: uclahs-cds/tool-Nextflow-action/build-and-deploy-docs@v1

.github/workflows/pipeline-release.yaml

@@ -10,6 +10,6 @@ jobs:
     name: A job to add a release asset with submodules
     steps:
       - id: release-asset
-        uses: uclahs-cds/tool-Nextflow-action/add-source-with-submodules@latest
+        uses: uclahs-cds/tool-Nextflow-action/add-source-with-submodules@v1
         with:
           my-token: ${{ secrets.UCLAHS_CDS_REPO_READ_TOKEN }}