examples: Make `resolver = "2"` (#3191)

examples/tutorial/basic-0/Cargo.toml

@@ -1,4 +1,5 @@
 [workspace]
+resolver = "2"
 members = [
   "programs/*"
 ]

examples/tutorial/basic-1/Cargo.toml

@@ -1,4 +1,6 @@
 [workspace]
+resolver = "2"
+
 members = [
   "programs/*"
 ]

examples/tutorial/basic-2/Cargo.toml

@@ -1,4 +1,5 @@
 [workspace]
+resolver = "2"
 members = [
   "programs/*"
 ]

examples/tutorial/basic-3/Cargo.toml

@@ -1,4 +1,5 @@
 [workspace]
+resolver = "2"
 members = [
     "programs/*"
 ]

examples/tutorial/basic-4/Cargo.toml

@@ -1,4 +1,5 @@
 [workspace]
+resolver = "2"
 members = [
     "programs/*"
 ]

examples/tutorial/basic-5/Cargo.toml

@@ -1,4 +1,5 @@
 [workspace]
+resolver = "2"
 members = [
     "programs/*"
 ]