Remove 1.25.X and 1.26.X versions with upgrade bug.

There was a bug which deleted the collection
after the upgrade in older 1.25 and 1.26 versions:
weaviate/weaviate#5971
Therefore, we are skipping those versions without
the fix to avoid the upgrade journey to fail.

.github/workflows/matrix.yaml

@@ -27,7 +27,7 @@ jobs:
   weaviate-version-information:
     runs-on: ubuntu-latest
     env:
-      weaviate_version: "${{inputs.weaviate_version || '1.27.2'}}"
+      weaviate_version: "${{inputs.weaviate_version || '1.28.3'}}"
     outputs:
       weaviate_version: ${{ steps.set-output.outputs.weaviate_version }}
     steps:
@@ -43,7 +43,7 @@ jobs:
     uses: ./.github/workflows/tests.yaml
     with:
       lsm_access_strategy: ${{matrix.lsm_access_strategy}}
-      weaviate_version: ${{ github.event_name == 'schedule' && 'nightly' || inputs.weaviate_version || '1.27.2' }}
+      weaviate_version: ${{ github.event_name == 'schedule' && 'nightly' || inputs.weaviate_version || '1.28.3' }}
     secrets:
       AWS_ACCESS_KEY: ${{secrets.AWS_ACCESS_KEY}}
       AWS_SECRET_ACCESS_KEY: ${{secrets.AWS_SECRET_ACCESS_KEY}}
@@ -64,7 +64,7 @@ jobs:
           # This data has been defined as a Workflow in the slack channel chaos-pipeline
           payload: |
             {
-              "message": "Chaos pipeline failed for Weaviate version: latest.\nLink: https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
+              "message": "Chaos pipeline failed for Weaviate version: nightly.\nLink: https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}",
               "slack_channel": "${{ env.SLACK_CHANNEL }}"
             }
         env:

apps/upgrade-journey/versions.go

@@ -8,6 +8,7 @@ import (
 	"log"
 	"net/http"
 	"regexp"
+	"slices"
 	"sort"
 	"time"
 
@@ -18,6 +19,9 @@ import (
 	"github.com/weaviate/weaviate-go-client/v4/weaviate"
 )
 
+// skip versions that are not compatible with the upgrade journey due to bugs or breaking changes
+var skipVersions = []string{"1.25.0", "1.25.1", "1.25.2", "1.25.3", "1.25.4", "1.25.5", "1.25.6", "1.25.7", "1.25.8", "1.25.9", "1.25.10", "1.25.11", "1.25.12", "1.25.13", "1.25.14", "1.25.15", "1.25.16", "1.25.17", "1.25.18", "1.25.19", "1.26.0", "1.26.1", "1.26.2", "1.26.3", "1.26.4", "1.26.5"}
+
 func buildVersionList(ctx context.Context, min, target string) ([]string, error) {
 	ghReleases, err := retrieveVersionListFromGH()
 	if err != nil {
@@ -129,6 +133,10 @@ func sortSemverAndTrimToMinimum(versions semverList, min, max string) semverList
 
 	i := 0
 	for _, version := range versions {
+		// if the version is in the skipVersions list, skip it
+		if slices.Contains(skipVersions, version.version.String()) {
+			continue
+		}
 		if !version.largerOrEqual(minV) {
 			continue
 		}