Pin action versions in deploy workflow

Author: delucis

.github/workflows/deploy.yml

@@ -24,9 +24,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout your repository using git
-        uses: actions/checkout@v6
+        uses: actions/checkout@8e8c483db84b4bee98b60c0593521ed34d9990e8 # v6.0.1
       - name: Install, build, and upload your site output
-        uses: withastro/action@v5
+        uses: withastro/action@fc88a7002f0c62327f26fb1b15f2a1d581249278 # v5.1.0
         # with:
             # path: . # The root location of your Astro project inside the repository. (optional)
             # node-version: 22 # The specific version of Node that should be used to build your site. Defaults to 22. (optional)
@@ -42,4 +42,4 @@ jobs:
     steps:
       - name: Deploy to GitHub Pages
         id: deployment
-        uses: actions/deploy-pages@v4
+        uses: actions/deploy-pages@d6db90164ac5ed86f2b6aed7e0febac5b3c0c03e # v4.0.5