Remove test risc5

Author: benjaminjonard

.github/workflows/docker-beta.yml

@@ -33,4 +33,4 @@ jobs:
           file: Dockerfile
           push: true
           tags: ${{ secrets.BETA_REPO_URL }}:mendako
-          platforms: linux/amd64,linux/arm64,linux/riscv64
+          platforms: linux/amd64,linux/arm64

.github/workflows/docker-release.yml

@@ -35,4 +35,4 @@ jobs:
           file: Dockerfile
           push: true
           tags: docker.io/benjaminjonard/mendako:latest,docker.io/benjaminjonard/mendako:1.2.6
-          platforms: linux/amd64,linux/arm64,linux/riscv64
+          platforms: linux/amd64,linux/arm64