LakeFS Java SDK compatibility with Spark

[peter-mcclonski]

LakeFS Java SDK depends on okhttp 4.x. The apache spark docker image ships with okhttp 3.x. I've specifically seen this with the spark 3.5.2 image, using lakefs SDK 1.48.0

In this environment, branch creation calls fail with the following error:

 Exception in thread "main" java.lang.NoSuchMethodError: 'okhttp3.RequestBody okhttp3.RequestBody.create(java.lang.String, okhttp3.MediaType)'
     at io.lakefs.clients.sdk.ApiClient.serialize(ApiClient.java:955)
     at io.lakefs.clients.sdk.ApiClient.buildRequest(ApiClient.java:1211)
     at io.lakefs.clients.sdk.ApiClient.buildCall(ApiClient.java:1160)
     at io.lakefs.clients.sdk.BranchesApi.createBranchCall(BranchesApi.java:332)
     at io.lakefs.clients.sdk.BranchesApi.createBranchValidateBeforeCall(BranchesApi.java:347)
     at io.lakefs.clients.sdk.BranchesApi.createBranchWithHttpInfo(BranchesApi.java:353)
     at io.lakefs.clients.sdk.BranchesApi.access$500(BranchesApi.java:46)
     at io.lakefs.clients.sdk.BranchesApi$APIcreateBranchRequest.execute(BranchesApi.java:415)

The lakefs Hadoop fs addresses this problem by shading the okhttp dependency. The SDK should take the same path to avoid this incompatibility.