ci(codeql): bump init and analyze together to v4.37.3

Dependabot split the codeql-action bump into two PRs (#1398 init,
#1399 analyze), but init and analyze must run the same action version:
each PR alone fails its own analyze job with "Loaded a configuration
file for version '4.37.3', but running version '4.36.2'". Bump both
pins in one change instead. SHA verified against the upstream v4.37.3
tag.

Signed-off-by: Martin Vogel <martin.vogel.tech@gmail.com>

.github/workflows/codeql.yml

@@ -29,7 +29,7 @@ jobs:
         run: sudo apt-get update && sudo apt-get install -y zlib1g-dev
 
       - name: Initialize CodeQL
-        uses: github/codeql-action/init@8aad20d150bbac5944a9f9d289da16a4b0d87c1e # v4
+        uses: github/codeql-action/init@e4fba868fa4b1b91e1fdab776edc8cfbe6e9fb81 # v4.37.3
         with:
           languages: c-cpp
           build-mode: manual
@@ -38,6 +38,6 @@ jobs:
         run: scripts/build.sh
 
       - name: Perform CodeQL Analysis
-        uses: github/codeql-action/analyze@8aad20d150bbac5944a9f9d289da16a4b0d87c1e # v4
+        uses: github/codeql-action/analyze@e4fba868fa4b1b91e1fdab776edc8cfbe6e9fb81 # v4.37.3
         with:
           category: "/language:c-cpp"