Add quotes to git safe.directory in .devcontainer to fix parsing error (#167)

Currently the git command fails because the * is not parsed correctly in
command line without the quote. This resolves this issue.

Author: cfernald

.sync/devcontainer/devcontainer.json

@@ -1,6 +1,6 @@
 {
   "image": "ghcr.io/tianocore/containers/fedora-37-dev:latest",
-  "postCreateCommand": "git config --global --add safe.directory * && pip install --upgrade -r pip-requirements.txt",
+  "postCreateCommand": "git config --global --add safe.directory '*' && pip install --upgrade -r pip-requirements.txt",
   "customizations": {
     "vscode": {
       "extensions": [
@@ -9,4 +9,4 @@
       ]
     }
   }
-}
+}