chore: hardcode foundry to v1.3.5 in ci (#1657)

**Motivation:**

Stable is now v1.4.0+ which contains breaking forge fmt changes.

**Modifications:**

Hardcoded ci to v1.3.5 until the end of this audit cycle.

**Result:**

Ci pinned to v1.3.5 (no breaking changes for now).

Author: 0xClandestine

.github/workflows/foundry.yml

@@ -58,7 +58,7 @@ jobs:
       - name: Install Foundry
         uses: foundry-rs/foundry-toolchain@82dee4ba654bd2146511f85f0d013af94670c4de
         with:
-          version: stable
+          version: v1.3.5
 
       # Run Forge's formatting checker to ensure consistent code style.
       - name: "Forge Fmt"
@@ -123,7 +123,7 @@ jobs:
       - name: "Install Foundry"
         uses: foundry-rs/foundry-toolchain@82dee4ba654bd2146511f85f0d013af94670c4de
         with:
-          version: stable
+          version: v1.3.5
 
       # Run storage diff check to detect storage layout incompatibilities.
       - name: "Mainnet Storage Diff"
@@ -170,7 +170,7 @@ jobs:
       - name: "Install Foundry"
         uses: foundry-rs/foundry-toolchain@82dee4ba654bd2146511f85f0d013af94670c4de
         with:
-          version: stable
+          version: v1.3.5
 
       # Install LCOV for coverage report generation.
       - name: Install LCOV (Prebuilt)
@@ -256,7 +256,7 @@ jobs:
       - name: "Install Foundry"
         uses: foundry-rs/foundry-toolchain@82dee4ba654bd2146511f85f0d013af94670c4de
         with:
-          version: stable
+          version: v1.3.5
 
       - name: Build contracts on PR branch
         run: |