Upgrade RACK's Fuseki to latest and RACK graph to TDB2

[cuddihyge]

• put fuseki 4.7.0 into RACK
• upgrade jena libs to 4.7.0 also
• change RACK dataset to tdb2
• upgrade optimization (and compaction?) to TDB2 versions

[tuxji]

So, to confirm:

1. Bump Fuseki and Jena from 4.6.1 to 4.7.0 in the files below,

.github/workflows/assemble-files.yml
51:    - name: Download Fuseki
54:        curl -LSfs https://archive.apache.org/dist/jena/binaries/apache-jena-fuseki-4.6.1.tar.gz -o RACK/rack-box/files/fuseki.tar.gz
56:    - name: Download Apache Jena
59:        curl -LSfs https://archive.apache.org/dist/jena/binaries/apache-jena-4.6.1.tar.gz -o RACK/rack-box/files/jena.tar.gz

2. Switch from tdb to tdb2 in the files below,

cli/optimize.sh
18:# Currently using TDB1, this should become tdb2.tdbstats for TDB2
19:TDBSTATS="/opt/jena/bin/tdbstats"
26:if [[ ! -x "${TDBSTATS}" ]]; then
27:    echo "Aborting, ${TDBSTATS} is not executable"
31:echo "Running tdbstats"
34:"${TDBSTATS}" --desc "${RACK_FUSEKI_CONFIG}" > "${TMP_STATS}" && mv "${TMP_STATS}" "${STATS}"

rack-box/scripts/install.sh
155:curl -Ss -d 'dbName=RACK' -d 'dbType=tdb' 'http://localhost:3030/$/datasets'

Right?