chore: migrate to hetzner s3

.woodpecker/build.yaml

@@ -106,11 +106,10 @@ steps:
   - name: Check if files for R version already exist in s3
     environment:
       AWS_ACCESS_KEY_ID:
-        from_secret: B2_APPLICATION_KEY_ID
+        from_secret: HETZNER_S3_ACCESS_KEY_K3S
       AWS_SECRET_ACCESS_KEY:
-        from_secret: B2_APPLICATION_KEY
-      # AWS_REGION: s3.eu-central-003
-      AWS_ENDPOINT_URL: https://s3.eu-central-003.backblazeb2.com
+        from_secret: HETZNER_S3_SECRET_KEY_K3S
+      AWS_ENDPOINT_URL: https://fsn1.your-objectstorage.com
     image: alpine:3.21
     commands:
       - apk add -q --no-cache aws-cli
@@ -158,7 +157,7 @@ steps:
             value: "true"
             effect: "NoSchedule"
 
-  - name: Upload to Backblaze S3
+  - name: Upload to Hetzner S3
     image: woodpeckerci/plugin-s3:1.3.0
     pull: true
     settings:
@@ -166,13 +165,13 @@ steps:
       strip_prefix: /tmp/${PLATFORM}/
       source: /tmp/${PLATFORM}/*
       target: ${PLATFORM_ID}/
-      region: s3.eu-central-003
+      region: fsn1
       acl: public-read
-      endpoint: s3.eu-central-003.backblazeb2.com
+      endpoint: fsn1.your-objectstorage.com
       access_key:
-        from_secret: B2_APPLICATION_KEY_ID
+        from_secret: HETZNER_S3_ACCESS_KEY_K3S
       secret_key:
-        from_secret: B2_APPLICATION_KEY
+        from_secret: HETZNER_S3_SECRET_KEY_K3S
       overwrite: false
     volumes:
       - ci-tmp-rwx:/tmp # agent on k8s