Disabling OTel API automatic upgrades

Author: eyalkoren

.github/dependabot.yml

@@ -33,7 +33,6 @@ updates:
       - dependency-name: "com.datastax.oss:java-driver-core"
       - dependency-name: "io.micrometer:*"
       - dependency-name: "jakarta.*:*"
-      - dependency-name: "io.opentelemetry:opentelemetry-api"
     ignore:
       - dependency-name: "net.bytebuddy:byte-buddy-agent"
         # We deliberately want to keep this older version of Byte Buddy for our runtime attach test