Update zlib , c_compiler and cxx_compiler.

[zhangys2]

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I wanted to let you know that I linted all conda-recipes in your PR (recipe/meta.yaml) and found some lint.

Here's what I've got...

For recipe/meta.yaml:

• ❌ This recipe is using a compiler, which now requires adding a build dependence on {{ stdlib("c") }} as well. Note that this rule applies to each output of the recipe using a compiler. For further details, please see META: {{ stdlib("c") }} migration conda-forge.github.io#2102.

For recipe/meta.yaml:

• ℹ️ In conda-forge.yml: $.compiler_stack = comp7.

  'Compiler Stack' is deprecated.
  Compiler stack environment variable. This is used to specify the compiler
  stack to use for builds. Deprecated.

  compiler_stack: comp7

  Schema

  {
    "anyOf": [
      {
        "type": "string"
      },
      {
        "type": "null"
      }
    ],
    "default": "comp7",
    "deprecated": true,
    "title": "Compiler Stack"
  }

• ℹ️ In conda-forge.yml: $.max_py_ver = 37.

  'Max Py Ver' is deprecated.
  Maximum Python version. This is used to specify the maximum Python version
  to use for builds. Deprecated.

  max_py_ver: 37

  Schema

  {
    "anyOf": [
      {
        "type": "string"
      },
      {
        "type": "null"
      }
    ],
    "default": "37",
    "deprecated": true,
    "title": "Max Py Ver"
  }

• ℹ️ In conda-forge.yml: $.max_r_ver = 35.

  'Max R Ver' is deprecated.
  Maximum R version. This is used to specify the maximum R version to use
  for builds. Deprecated.

  max_r_ver: 34

  Schema

  {
    "anyOf": [
      {
        "type": "string"
      },
      {
        "type": "null"
      }
    ],
    "default": "34",
    "deprecated": true,
    "title": "Max R Ver"
  }

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