Bump actions/upload-artifact from 4.6.2 to 7.0.2 - #6

Encountered a fatal error while running "/opt/hostedtoolcache/CodeQL/2.27.2/x64/codeql/codeql database finalize --finalize-dataset --threads=4 --ram=14575 /home/runner/work/_temp/codeql_databases/java". Exit code was 32 and last log line was: ERROR: CodeQL could not process any code written in Java/Kotlin. For more information, review our troubleshooting guide at https://gh.io/troubleshooting-code-scanning/no-source-code-seen-during-build . See the logs for more details.

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/