Set timeout for smoketests (#3772)

# Description of Changes

<!-- Please describe your change, mention any related tickets, and so on
here. -->

Sets a 2 hour timeout for the smoketests. If the smoketests are taking
more than 2 hours they likely will never finish and we should just time
them out.

# API and ABI breaking changes

None

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corresponding GitHub label. -->

# Expected complexity level and risk

1

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# Testing

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reviewers to do,
so that you're confident that all the changes work as expected! -->

- [x]
https://github.com/clockworklabs/SpacetimeDB/actions/runs/19697510980/job/56425630374?pr=3772

Author: jdetter

.github/workflows/ci.yml

@@ -34,6 +34,7 @@ jobs:
             container: null
     runs-on: ${{ matrix.runner }}
     container: ${{ matrix.container }}
+    timeout-minutes: 120
     env:
       CARGO_TARGET_DIR: ${{ github.workspace }}/target
     steps: