ci: pin GitHub Actions to commit SHAs for supply chain security

actions/checkout: v6.0.2 (de0fac2e4500dabe0009e67214ff5f5447ce83dd)
devcontainers/action: v1.4.3 (1082abd5d2bf3a11abccba70eef98df068277772)

Dependabot will keep these SHAs up to date automatically.

Author: jpawlowski

.github/workflows/release.yaml

@@ -13,10 +13,10 @@ jobs:
       pull-requests: write
       packages: write
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: "Publish Features"
-        uses: devcontainers/action@v1
+        uses: devcontainers/action@1082abd5d2bf3a11abccba70eef98df068277772 # v1.4.3
         with:
           publish-features: "true"
           base-path-to-features: "./src"

.github/workflows/test.yaml

@@ -28,7 +28,7 @@ jobs:
           # - ubuntu:latest
           - mcr.microsoft.com/devcontainers/base:ubuntu
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: "Install latest devcontainer CLI"
         run: npm install -g @devcontainers/cli
@@ -47,7 +47,7 @@ jobs:
           - codespaces-dotfiles
           - powershell-extended
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: "Install latest devcontainer CLI"
         run: npm install -g @devcontainers/cli

.github/workflows/validate.yml

@@ -13,10 +13,10 @@ jobs:
     env:
       FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: 'true'
     steps:
-      - uses: actions/checkout@v6
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
       - name: "Validate devcontainer-feature.json files"
-        uses: devcontainers/action@v1
+        uses: devcontainers/action@1082abd5d2bf3a11abccba70eef98df068277772 # v1.4.3
         with:
           validate-only: "true"
           base-path-to-features: "./src"