Update vearch Dockerfile: pin vearch version to 3.2.8.3 in Dockerfile #533

Job	Run time
unit-tests	1m 15s
annoy (random-xs-20-angular)	9m 40s
balltree (random-xs-20-angular)	2m 39s
bruteforce (random-xs-20-angular)	2m 18s
ckdtree (random-xs-20-angular)	2m 12s
diskann (random-xs-20-angular)	2m 8s
dolphinnpy (random-xs-20-angular)	3m 34s
elasticsearch (random-xs-20-angular)	4m 36s
elastiknn (random-xs-20-angular)	4m 13s
faiss (random-xs-20-angular)	7m 2s
flann (random-xs-20-angular)	6m 35s
glass (random-xs-20-angular)	2m 10s
hnswlib (random-xs-20-angular)	3m 6s
kdtree (random-xs-20-angular)	2m 30s
luceneknn (random-xs-20-angular)	15m 54s
milvus (random-xs-20-angular)	2m 46s
mrpt (random-xs-20-angular)	2m 58s
nndescent (random-xs-20-angular)	3m 58s
n2 (random-xs-20-angular)	3m 31s
nmslib (random-xs-20-angular)	4m 27s
onng_ngt (random-xs-20-angular)	15m 33s
opensearchknn (random-xs-20-angular)	7m 0s
panng_ngt (random-xs-20-angular)	8m 13s
pg_embedding (random-xs-20-angular)	5m 20s
pgvector (random-xs-20-angular)	5m 11s
pynndescent (random-xs-20-angular)	7m 15s
redisearch (random-xs-20-angular)	4m 2s
qdrant (random-xs-20-angular)	6m 58s
qg_ngt (random-xs-20-angular)	17m 19s
qsg_ngt (random-xs-20-angular)	2m 44s
scann (random-xs-20-angular)	4m 43s
sptag (random-xs-20-angular)	11m 56s
tinyknn (random-xs-20-angular)	2m 22s
vald (random-xs-20-angular)	2m 48s
vearch (random-xs-20-angular)	6m 22s
vespa (random-xs-20-angular)	3m 2s
voyager (random-xs-20-angular)	3m 14s
weaviate (random-xs-20-angular)	4m 24s
pynndescent (random-xs-16-hamming)	7m 16s
datasketch (random-s-jaccard)	4m 44s
pynndescent (random-s-jaccard)	8m 33s
	3h 46m 31s

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