Point StaticArrays and FiniteDifferences to their v2 compat forks

Author: JamesWrigley

.github/workflows/CI.yml

@@ -50,8 +50,14 @@ jobs:
         with:
           version: ${{ matrix.version }}
           arch: ${{ matrix.arch }}
-      - uses: julia-actions/cache@v2
+      - uses: julia-actions/cache@v3
       - uses: julia-actions/julia-buildpkg@v1
+      - run: |
+          julia --project -e '
+          using Pkg
+          Pkg.add([PackageSpec(; url="https://github.com/JamesWrigley/StaticArrays.jl.git", rev="compat"),
+                   PackageSpec(; url="https://github.com/JamesWrigley/FiniteDifferences.jl.git", rev="compat")])
+          '
       - uses: julia-actions/julia-runtest@v1
       - uses: julia-actions/julia-processcoverage@v1
       - uses: codecov/codecov-action@v5