Docs: add Debian 13 in README.md

Signed-off-by: ChengHao Yang <17496418+tico88612@users.noreply.github.com>

README.md

@@ -87,7 +87,7 @@ vagrant up
 ## Supported Linux Distributions
 
 - **Flatcar Container Linux by Kinvolk**
-- **Debian** Bookworm, Bullseye
+- **Debian** Bookworm, Bullseye, Trixie
 - **Ubuntu** 22.04, 24.04
 - **CentOS/RHEL** [8, 9](docs/operating_systems/rhel.md#rhel-8)
 - **Fedora** 39, 40

docs/developers/ci.md

@@ -10,6 +10,7 @@ almalinux9 |  :white_check_mark: | :x: | :x: | :x: | :white_check_mark: | :x: |
 amazon |  :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :x: |
 debian11 |  :white_check_mark: | :x: | :white_check_mark: | :x: | :x: | :x: | :white_check_mark: |
 debian12 |  :white_check_mark: | :white_check_mark: | :white_check_mark: | :x: | :x: | :x: | :x: |
+debian13 |  :white_check_mark: | :white_check_mark: | :x: | :x: | :x: | :x: | :x: |
 fedora39 |  :white_check_mark: | :x: | :x: | :x: | :x: | :white_check_mark: | :x: |
 fedora40 |  :x: | :x: | :x: | :x: | :x: | :x: | :x: |
 flatcar4081 |  :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :x: |
@@ -27,6 +28,7 @@ almalinux9 |  :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :x: |
 amazon |  :x: | :x: | :x: | :x: | :x: | :x: | :x: |
 debian11 |  :x: | :x: | :x: | :x: | :x: | :x: | :x: |
 debian12 |  :x: | :x: | :x: | :x: | :x: | :x: | :x: |
+debian13 |  :x: | :x: | :x: | :x: | :x: | :x: | :x: |
 fedora39 |  :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :x: |
 fedora40 |  :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :x: |
 flatcar4081 |  :x: | :x: | :x: | :x: | :x: | :x: | :x: |
@@ -44,6 +46,7 @@ almalinux9 |  :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :x: |
 amazon |  :x: | :x: | :x: | :x: | :x: | :x: | :x: |
 debian11 |  :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :x: |
 debian12 |  :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :x: |
+debian13 |  :x: | :x: | :x: | :x: | :x: | :x: | :x: |
 fedora39 |  :x: | :x: | :x: | :x: | :x: | :x: | :x: |
 fedora40 |  :white_check_mark: | :x: | :x: | :x: | :x: | :x: | :x: |
 flatcar4081 |  :x: | :x: | :x: | :x: | :x: | :x: | :x: |