fix: remove usage msgspec git

Dockerfile

@@ -11,7 +11,7 @@ RUN \
   rm -f 7zip*.apk && \
   echo "**** install packages ****" && \
   apk add --no-cache --virtual=build-dependencies \
-    gcc git musl-dev \
+    gcc musl-dev \
     curl-dev && \
   apk add --no-cache \
     shadow \
@@ -22,7 +22,7 @@ RUN \
   if [[ -n "${VERSION}" && "${VERSION}" != "dev" ]]; then \
     PYLOAD="pyload-ng[all]==${VERSION}"; \
   fi && \
-  pip3 install --no-cache-dir --break-system-packages -U "git+https://github.com/jcrist/msgspec.git" legacy-cgi "${PYLOAD}" && \
+  pip3 install --no-cache-dir --break-system-packages -U legacy-cgi "${PYLOAD}" && \
   apk del --purge \
     build-dependencies && \
   echo "**** add user abc ****" && \