Build sentry-native with CXX 14

[ericriff]

sentry-crashpad exposes CXX 14 code on its headers, so the build for sentry-native with crashpad as backend fails.
I reported this upstream and the devs agreed to make CXX 14 the default.
getsentry/sentry-native#574

Closes #6246

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• I've read the guidelines for contributing.
• I've followed the PEP8 style guides for Python code in the recipes.
• I've used the latest Conan client version.
• I've tried at least one configuration locally with the
  conan-center hook activated.

[ghost]

I detected other pull requests that are modifying sentry-native/all recipe:

• sentry-native/0.4.11 #6298
• sentry-native/0.4.*: Remove *-find-find-conan-qt.path #6280

This message is automatically generated by https://github.com/ericLemanissier/conan-center-conflicting-prs so don't hesitate to report issues/improvements there.

[ericriff]

I used the same PR to fix the missing support for breakpad. If you think it would be better to split this in 2, I'll revert my last commit.
@madebr

[madebr]

Combining the pr's is no problem for me.
c3i will not test google's breakpad integration anyways.

[conan-center-bot]

All green in build 8 (fbc7f714a0734fbcbfe2e62309ba718889f2317a):

• sentry-native/0.4.10@:
  All packages built successfully! (All logs)

• sentry-native/0.4.9@:
  All packages built successfully! (All logs)

• sentry-native/0.4.8@:
  All packages built successfully! (All logs)

• sentry-native/0.2.6@:
  All packages built successfully! (All logs)

• sentry-native/0.4.7@:
  All packages built successfully! (All logs)

• sentry-native/0.4.1@:
  All packages built successfully! (All logs)