chore(deps): bump pgvector and build in parallel

Author: cpcloud

docker/postgres/Dockerfile

@@ -1,9 +1,9 @@
 FROM postgis/postgis:17-3.5-alpine AS pgvector-builder
 RUN apk add --no-cache git build-base clang19 llvm19-dev llvm19
 WORKDIR /tmp
-RUN git clone --branch v0.8.0 https://github.com/pgvector/pgvector.git
+RUN git clone --branch v0.8.1 https://github.com/pgvector/pgvector.git
 WORKDIR /tmp/pgvector
-RUN make && make install
+RUN make -j $(nproc) && make -j $(nproc) install
 
 FROM postgis/postgis:17-3.5-alpine
 RUN apk add --no-cache postgresql17-plpython3