fix(gha): fix submodule tag oz-contracts-upgradeable

Version 5 and up doesn't contain the missing MerkleProofUpgradeable.sol

Author: bitbeckers

.github/workflows/ci-default.yml

@@ -34,30 +34,6 @@ jobs:
         with:
           submodules: "recursive"
 
-      - name: Verify submodules are checked out
-        run: |
-          git submodule status
-          git submodule foreach 'echo Submodule $name checked out to $sha1'
-
-      - name: Ensure all submodules are initialized
-        run: |
-          git submodule foreach --quiet 'test -d "$name" || (echo "Submodule $name is missing!" && exit 1)'
-      
-
-      - name: Inspect directory structure
-        run: |
-          echo "Root directory contents:"
-          ls -la
-          echo "Project directory contents:"
-          ls -la /home/runner/work/hypercerts-protocol/hypercerts-protocol
-          echo "lib directory contents:"
-          ls -la /home/runner/work/hypercerts-protocol/hypercerts-protocol/lib
-
-      - name: Find specific file
-        run: |
-          echo "Searching for MerkleProofUpgradeable.sol..."
-          find /home/runner/work/hypercerts-protocol/hypercerts-protocol -name "MerkleProofUpgradeable.sol" -print
-    
       - name: Install Foundry
         uses: foundry-rs/foundry-toolchain@v1
 

.gitmodules

@@ -4,6 +4,7 @@
 [submodule "lib/openzeppelin-contracts-upgradeable"]
 	path = lib/openzeppelin-contracts-upgradeable
 	url = https://github.com/OpenZeppelin/openzeppelin-contracts-upgradeable
+	tag = v4.9.6
 [submodule "lib/forge-std"]
 	path = lib/forge-std
 	url = https://github.com/foundry-rs/forge-std