Move to chip-build-tizen version 8 intead of 1

To apply Tizen SDK's thread API change, need to move the version
to the latest 8 version.

8: Pulling from project-chip/chip-build-tizen
7007490126ef: Pull complete
8c50038b2d4b: Pull complete
1ceebab4b519: Pull complete
c23871316c9b: Pull complete
137d4120aadf: Pull complete
1ab06bccbc26: Pull complete
f466206f1a34: Pull complete
d895c781c0ec: Pull complete
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cb2826a8432d: Pull complete
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a5885ba9bdcd: Pull complete
3d43863e6d11: Pull complete
Digest: sha256:bf139f3d53eecae25f88d6aef9ead70bf638fc135292172b7db7187d21540fa2
Status: Downloaded newer image for ghcr.io/project-chip/chip-build-tizen:8
ghcr.io/project-chip/chip-build-tizen:8

.github/workflows/examples-tizen.yaml

@@ -34,7 +34,7 @@ jobs:
         if: github.actor != 'restyled-io[bot]'
 
         container:
-            image: ghcr.io/project-chip/chip-build-tizen:1
+            image: ghcr.io/project-chip/chip-build-tizen:8
             options: --user root
             volumes:
                 - "/tmp/bloat_reports:/tmp/bloat_reports"