upgrade to tensorflow 2.6.0

[scarrazza]

Upgrading tensorflow to v2.6.0.

[codecov]

Codecov Report

Merging #10 (2097a8b) into main (457a3b3) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              main       #10   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         3           
  Lines          371       371           
=========================================
  Hits           371       371           

Flag	Coverage Δ
unittests	100.00% <ø> (ø)

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[scarrazza]

@stavros11 I think this PR can be merge asap, let me know if you agree. This might help with the numpy issue reported in qiboteam/qibo#453

[stavros11]

Thanks for the update, yes sure we can merge.

[scarrazza]

@stavros11, thanks. I am planning to make a new release now, do you agree (or are you planning to add some extra feature)?

[stavros11]

@stavros11, thanks. I am planning to make a new release now, do you agree (or are you planning to add some extra feature)?

Releasing is okay for me. I do not have any plan for new features in qibotf for the time being.

[scarrazza]

Thanks.