Pin the analyzer to 7.3.0 for build_modules. (#3979)

Author: davidmorgan

build_modules/pubspec.yaml

@@ -10,7 +10,7 @@ environment:
   sdk: '>=3.7.0 <3.9.0-z'
 
 dependencies:
-  analyzer: '>=5.1.0 <8.0.0'
+  analyzer: '>=5.1.0 <7.4.0'
   async: ^2.5.0
   bazel_worker: ^1.0.0
   build: ^2.0.0