fix sed syntax again

Author: biozal

.github/workflows/kind-maven.yaml

@@ -56,7 +56,7 @@ jobs:
           echo "connectionString = $(echo "${envIpAddress}:${envIpPort}?network=external" | sed -e 's/[]$.*[\^]/\\&/g' )" >> $GITHUB_ENV 
       - name: fix connection string
         run: |   
-         sed -i "s|127\.0\.0\.1|${connectionString}|" src/main/java/org/couchbase/quickstart/configs/ConfigDb.java
+         sed -i 's|127\.0\.0\.1|'"${connectionString}"'|' src/main/java/org/couchbase/quickstart/configs/ConfigDb.java
       - name: validate file fix
         run: cat src/main/java/org/couchbase/quickstart/configs/ConfigDb.java 
       - name: Build with Maven