fix: upgrade Sprig to bring in bugfix. Fixes argoproj#15093

As @dmarquez-splunk discovered, the Sprig upgrade in argoproj#14307 introduced a
regression when evaluating an expression that has a call to a variadic
Sprig function with `nil`. This was fixed in
expr-lang/expr#868, which was released as
[v1.17.7](https://github.com/expr-lang/expr/releases/tag/v1.17.7).

I also added a test case to prevent regressions.

Signed-off-by: Mason Malone <651224+MasonM@users.noreply.github.com>

Author: MasonM

go.mod

@@ -21,7 +21,7 @@ require (
 	github.com/dustin/go-humanize v1.0.1
 	github.com/evanphx/json-patch v5.9.11+incompatible
 	github.com/evilmonkeyinc/jsonpath v0.8.1
-	github.com/expr-lang/expr v1.17.5
+	github.com/expr-lang/expr v1.17.7
 	github.com/gavv/httpexpect/v2 v2.16.0
 	github.com/go-git/go-git/v5 v5.16.0
 	github.com/go-jose/go-jose/v3 v3.0.4

go.sum

@@ -276,8 +276,8 @@ github.com/evilmonkeyinc/jsonpath v0.8.1 h1:W8K4t8u7aipkQE0hcTICGAdAN0Xph349Ltjg
 github.com/evilmonkeyinc/jsonpath v0.8.1/go.mod h1:EQhs0ZsoD4uD56ZJbO30gMTfHLQ6DEa0/5rT5Ymy42s=
 github.com/exponent-io/jsonpath v0.0.0-20210407135951-1de76d718b3f h1:Wl78ApPPB2Wvf/TIe2xdyJxTlb6obmF18d8QdkxNDu4=
 github.com/exponent-io/jsonpath v0.0.0-20210407135951-1de76d718b3f/go.mod h1:OSYXu++VVOHnXeitef/D8n/6y4QV8uLHSFXX4NeXMGc=
-github.com/expr-lang/expr v1.17.5 h1:i1WrMvcdLF249nSNlpQZN1S6NXuW9WaOfF5tPi3aw3k=
-github.com/expr-lang/expr v1.17.5/go.mod h1:8/vRC7+7HBzESEqt5kKpYXxrxkr31SaO8r40VO/1IT4=
+github.com/expr-lang/expr v1.17.7 h1:Q0xY/e/2aCIp8g9s/LGvMDCC5PxYlvHgDZRQ4y16JX8=
+github.com/expr-lang/expr v1.17.7/go.mod h1:8/vRC7+7HBzESEqt5kKpYXxrxkr31SaO8r40VO/1IT4=
 github.com/fatih/camelcase v1.0.0 h1:hxNvNX/xYBp0ovncs8WyWZrOrpBNub/JfaMvbURyft8=
 github.com/fatih/camelcase v1.0.0/go.mod h1:yN2Sb0lFhZJUdVvtELVWefmrXpuZESvPmqwoZc+/fpc=
 github.com/fatih/color v1.18.0 h1:S8gINlzdQ840/4pfAwic/ZE0djQEH3wM94VfqLTZcOM=

util/template/replace_test.go

@@ -44,6 +44,11 @@ func Test_Replace(t *testing.T) {
 			require.NoError(t, err)
 			assert.Equal(t, toJSONString("bar"), r)
 		})
+		t.Run("Valid With Variadic Sprig Expression", func(t *testing.T) {
+			r, err := Replace(ctx, toJSONString("{{=sprig.dig('status', nil, workflow)}}"), map[string]string{"workflow.status": "Succeeded"}, false)
+			require.NoError(t, err)
+			assert.Equal(t, toJSONString("Succeeded"), r)
+		})
 		t.Run("Valid WorkflowStatus", func(t *testing.T) {
 			replaced, err := Replace(ctx, toJSONString(`{{=workflow.status == "Succeeded" ? "SUCCESSFUL" : "FAILED"}}`), map[string]string{"workflow.status": "Succeeded"}, false)
 			require.NoError(t, err)