fix: update Dockerfiles for upstream changes and build fixes

- gitea-mcp, mcp-grafana: bump Go from 1.24 to 1.26 (upstream go.mod
  now requires >= 1.26.x)
- proxmox-mcp: constrain requires-python to >=3.10 for fastmcp compat
- elasticsearch-mcp: add missing vendor repo to CloneVendorRepos.sh
  (elastic/mcp-server-elasticsearch)
- context7-mcp: add .npmrc to disable pnpm v10 strict built-deps check
- drawio-mcp: exclude dev-proxy package from build (upstream TS errors),
  build with pnpm v10 + .npmrc
- discourse-mcp, ghidra-mcp: remain blocked (upstream issues)

dockerfiles/proxmox-mcp/Dockerfile

@@ -12,6 +12,9 @@ COPY . .
 # Replace mcp git dependency with fastmcp from PyPI
 RUN sed -i 's|"mcp @ git+https://github.com/modelcontextprotocol/python-sdk.git"|"fastmcp"|' pyproject.toml
 
+# Fix requires-python for fastmcp compatibility (needs >=3.10)
+RUN sed -i 's/requires-python = ">=3.9"/requires-python = ">=3.10"/' pyproject.toml
+
 # Patch imports to use fastmcp instead of mcp.server.fastmcp
 RUN find . -name "*.py" -exec sed -i 's/from mcp\.server\.fastmcp/from fastmcp/g' {} \;