Rename SHA-256 to SHA-2 in various places

Author: Avaneesh-axiom

.github/workflows/extension-tests.yml

@@ -28,7 +28,7 @@ jobs:
           - { name: "rv32im", path: "rv32im" }
           - { name: "native", path: "native" }
           - { name: "keccak256", path: "keccak256" }
-          - { name: "sha256", path: "sha256" }
+          - { name: "sha2", path: "sha2" }
           - { name: "bigint", path: "bigint" }
           - { name: "algebra", path: "algebra" }
           - { name: "ecc", path: "ecc" }

.github/workflows/primitives.yml

@@ -8,7 +8,7 @@ on:
     paths:
       - "crates/circuits/primitives/**"
       - "crates/circuits/poseidon2-air/**"
-      - "crates/circuits/sha256-air/**"
+      - "crates/circuits/sha2-air/**"
       - "crates/circuits/mod-builder/**"
       - "Cargo.toml"
       - ".github/workflows/primitives.yml"
@@ -47,8 +47,8 @@ jobs:
         run: |
           cargo nextest run --cargo-profile fast --features parallel
 
-      - name: Run tests for sha256-air
-        working-directory: crates/circuits/sha256-air
+      - name: Run tests for sha2-air
+        working-directory: crates/circuits/sha2-air
         run: |
           cargo nextest run --cargo-profile fast --features parallel