chore(deps): update osv-schema digest to 88c4875 (#4529)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| osv-schema | digest | `c18cb69` → `88c4875` |

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Author: renovate-bot

gcp/workers/linter/Dockerfile

@@ -20,7 +20,7 @@ RUN apk add --no-cache git
 WORKDIR /src
 
 # Using osv-schema v1.7.3+
-RUN git clone https://github.com/ossf/osv-schema.git osv-schema && cd osv-schema && git checkout c18cb697447792d2eb47bea4ce70b7621a0f26e1
+RUN git clone https://github.com/ossf/osv-schema.git osv-schema && cd osv-schema && git checkout 88c48750ddae8c47a59fc8412c72ebb885d0bdc3
 
 WORKDIR /src/osv-schema/tools/osv-linter