fix: IMiddleware interface

[ilyydy]

fixes #2241

tsconfig 开启 strictFunctionTypes 时，方法参数必须逆变。以下为一示例：

interface Obj {
  f: (n: number) => any;
  g: (n?: number) => any;
}

class O1 implements Obj {
  f: () => 1; // Ok
  g: () => 1; // Ok
}

class O2 implements Obj {
  f: (n: number) => 1; // Ok
  g: (n: number) => 1; // Error, 类型“O2”中的属性“g”不可分配给基类型“Obj”中的同一属性
}

[gitpod-io]

[codecov-commenter]

Codecov Report

Merging #2242 (c6e6e20) into main (5eae117) will decrease coverage by 0.13%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #2242      +/-   ##
==========================================
- Coverage   82.51%   82.38%   -0.14%     
==========================================
  Files         434      434              
  Lines       15240    15240              
  Branches     3606     3606              
==========================================
- Hits        12576    12555      -21     
- Misses       2437     2455      +18     
- Partials      227      230       +3     

Impacted Files	Coverage Δ
packages/core/src/interface.ts	100.00% <ø> (ø)
packages/oss/src/manager.ts	38.88% <0.00%> (-50.00%)	⬇️
packages/oss/src/configuration.ts	60.00% <0.00%> (-40.00%)	⬇️
packages/upload/src/parse.ts	92.91% <0.00%> (-0.79%)	⬇️

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