build(deps): bump dawidd6/action-send-mail from 3 to 8

Bumps [dawidd6/action-send-mail](https://github.com/dawidd6/action-send-mail) from 3 to 8.
- [Release notes](https://github.com/dawidd6/action-send-mail/releases)
- [Commits](dawidd6/action-send-mail@v3...v8)

---
updated-dependencies:
- dependency-name: dawidd6/action-send-mail
  dependency-version: '8'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/ci-docker.yml

@@ -41,7 +41,7 @@ jobs:
         docker buildx build . --push --platform linux/arm64,linux/amd64 -t dptechnology/dflow:latest
 
     - name: send email
-      uses: dawidd6/action-send-mail@v3
+      uses: dawidd6/action-send-mail@v8
       with:
         server_address: smtp.feishu.cn
         server_port: 465

.github/workflows/ci-docs.yml

@@ -38,7 +38,7 @@ jobs:
         github_token: ${{ secrets.GITHUB_TOKEN }}
 
     - name: send email
-      uses: dawidd6/action-send-mail@v3
+      uses: dawidd6/action-send-mail@v8
       with:
         server_address: smtp.feishu.cn
         server_port: 465

.github/workflows/ci-pypi.yml

@@ -51,7 +51,7 @@ jobs:
         path: ./VERSION
 
     - name: send email
-      uses: dawidd6/action-send-mail@v3
+      uses: dawidd6/action-send-mail@v8
       with:
         server_address: smtp.feishu.cn
         server_port: 465