DO NOT MERGE

Author: AayushSabharwal

.github/workflows/Downstream.yml

@@ -51,6 +51,7 @@ jobs:
           try
             # force it to use this PR's version of the package
             Pkg.develop(PackageSpec(path="."))  # resolver may fail with main deps
+            Pkg.add(PackageSpec(url="https://github.com/SciML/SymbolicIndexingInterface.jl", rev="as/param-timeseries"))
             Pkg.update()
             Pkg.test(coverage=true)  # resolver may fail with test time deps
           catch err