CI: Revert GitHub Actions for Docker, by hash

All CI Builds have been failing since 18 hours ago:
- https://github.com/apache/nuttx/pull/18571#issuecomment-4104792750
- https://github.com/apache/nuttx/actions/runs/23389990049

> _The action docker/login-action@v4 is not allowed in apache/nuttx because all actions must be from a repository owned by your enterprise, created by GitHub, or match one of the patterns: 1Password/load-secrets-action@13f58eec61, 1Password/load-secrets-action@8d0d610af1, 1Password/load-secrets-action@dafbe7cb03, AdoptOpenJDK/install-jdk@*, BobAnkh/auto-generate-changelog@*, DavidAnson/markdownlint-cli2-action@07035fd053, DavidAnson/markdownlint-cli2-action@30a0e04f18, EnricoMi/publish-unit-test-result-action@*, JamesIves/github-pages-deploy-action@4a3abc783e, JamesIves/github-pages-deploy-action@d92aa235d0, Jimver/cuda-toolkit@6008063726, Jimver/cuda-toolkit@b6fc3a9f3f, JustinBeckwith/linkinator-action@af984b9f30f63e796..._

That's because ASF Infrastructure Team has mandated that we use the Hash Versions of GitHub Actions for Docker, stated below:
- https://github.com/apache/infrastructure-actions/blob/main/actions.yml
- Which generates: https://github.com/apache/infrastructure-actions/blob/main/approved_patterns.yml
- Due to: https://github.com/apache/infrastructure-actions/pull/547

```yaml
docker/build-push-action:
  10e90e3645eae34f1e60eeb005ba3a3d33f178e8:
    tag: v6.19.2
docker/login-action:
  c94ce9fb468520275223c153574b00df6fe4bcc9:
    tag: v3.7.0
docker/metadata-action:
  c299e40c65443455700f0fdfc63efafe5b349051:
    tag: v5.10.0
docker/setup-buildx-action:
  8d2750c68a42422c14e847fe6c8ac0403b4cbd6f:
    tag: v3.12.0
```

This PR reverts our GitHub Actions for Docker to the hash versions stated above.

Signed-off-by: Lup Yuen Lee <luppy@appkaki.com>

.github/workflows/build.yml

@@ -172,7 +172,7 @@ jobs:
         run: tar zxf sources.tar.gz
 
       - name: Docker Login
-        uses: docker/login-action@v3.7.0
+        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9  # v3.7.0
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
@@ -262,7 +262,7 @@ jobs:
         run: tar zxf sources.tar.gz
 
       - name: Docker Login
-        uses: docker/login-action@v3.7.0
+        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9  # v3.7.0
         with:
           registry: ghcr.io
           username: ${{ github.actor }}

.github/workflows/docker_linux.yml

@@ -66,10 +66,10 @@ jobs:
           swap-storage: true
 
       - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3.12.0
+        uses: docker/setup-buildx-action@8d2750c68a42422c14e847fe6c8ac0403b4cbd6f  # v3.12.0
 
       - name: Log into registry
-        uses: docker/login-action@v3.7.0
+        uses: docker/login-action@c94ce9fb468520275223c153574b00df6fe4bcc9  # v3.7.0
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
@@ -78,7 +78,7 @@ jobs:
         run: |
           df -h
       - name: Push Linux image
-        uses: docker/build-push-action@v6.19.2
+        uses: docker/build-push-action@10e90e3645eae34f1e60eeb005ba3a3d33f178e8  # v6.19.2
         with:
           context: tools/ci/docker/linux
           platforms: linux/amd64