Update LibreOffice version and Node.js version requirement

README.md

@@ -202,7 +202,7 @@ You have:
 2. `AdministratorAccess` policy granted to your AWS account (for production, we recommend restricting access as needed)
 3. Both console and programmatic access
 4. [AWS CLI](https://aws.amazon.com/cli/) installed and configured to use with your AWS account
-5. [NodeJS 12+](https://nodejs.org/en/download/) installed
+5. [NodeJS 18+](https://nodejs.org/en/download/) installed
 6. [Typescript 3.8+](https://www.typescriptlang.org/download) installed
 7. [AWS CDK CLI](https://docs.aws.amazon.com/cdk/latest/guide/getting_started.html) installed
 8. [Docker](https://docs.docker.com/get-docker/) installed

lib/semantic-search/functions/document-indexing/Dockerfile

@@ -5,7 +5,7 @@ RUN yum update -y && yum install -y wget tar gzip \
     libXinerama.x86_64 java-1.8.0-openjdk-devel && \
     yum clean all
 
-RUN wget -O - "http://download.documentfoundation.org/libreoffice/stable/7.5.4/rpm/x86_64/LibreOffice_7.5.4_Linux_x86-64_rpm.tar.gz" | tar -xvzf -
+RUN wget -O - "http://downloadarchive.documentfoundation.org/libreoffice/old/7.5.3.2/rpm/x86_64/LibreOffice_7.5.3.2_Linux_x86-64_rpm.tar.gz" | tar -xvzf -
 
 RUN yum localinstall -y LibreOffice_*/RPMS/*.rpm && \
     rm -rf LibreOffice_*