Bump OPA version to current main (#362)

This brings:
* optimizations to [walk](open-policy-agent/opa#6267)
* optimizations for [arithmetic](open-policy-agent/opa#6262) ops

Both are nice to have in the next release.

Signed-off-by: Anders Eknert <anders@styra.com>

go.mod

@@ -9,7 +9,7 @@ require (
 	github.com/google/go-cmp v0.5.9
 	github.com/gosuri/uitable v0.0.4
 	github.com/olekukonko/tablewriter v0.0.5
-	github.com/open-policy-agent/opa v0.57.0
+	github.com/open-policy-agent/opa v0.57.1-0.20231003111229-7fa6165c27bb
 	github.com/spf13/cobra v1.7.0
 	github.com/spf13/pflag v1.0.5
 	gopkg.in/yaml.v3 v3.0.1

go.sum

@@ -92,8 +92,8 @@ github.com/miekg/dns v1.1.43 h1:JKfpVSCB84vrAmHzyrsxB5NAr5kLoMXZArPSw7Qlgyg=
 github.com/miekg/dns v1.1.43/go.mod h1:+evo5L0630/F6ca/Z9+GAqzhjGyn8/c+TBaOyfEl0V4=
 github.com/olekukonko/tablewriter v0.0.5 h1:P2Ga83D34wi1o9J6Wh1mRuqd4mF/x/lgBS7N7AbDhec=
 github.com/olekukonko/tablewriter v0.0.5/go.mod h1:hPp6KlRPjbx+hW8ykQs1w3UBbZlj6HuIJcUGPhkA7kY=
-github.com/open-policy-agent/opa v0.57.0 h1:DftxYfOEHOheXvO2Q6HCIM2ZVdKrvnF4cZlU9C64MIQ=
-github.com/open-policy-agent/opa v0.57.0/go.mod h1:3FY6GNSbUqOhjCdvTXCBJ2rNuh66p/XrIc2owr/hSwo=
+github.com/open-policy-agent/opa v0.57.1-0.20231003111229-7fa6165c27bb h1:D9q7LaCyzkCNAe9xPAG11fumqVnwsG1ih3vwaB3/qMA=
+github.com/open-policy-agent/opa v0.57.1-0.20231003111229-7fa6165c27bb/go.mod h1:3FY6GNSbUqOhjCdvTXCBJ2rNuh66p/XrIc2owr/hSwo=
 github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=