Update dependency rollup to v1.26.5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
rollup	devDependencies	patch	1.26.3 -> 1.26.5

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Release Notes

rollup/rollup

v1.26.5

Compare Source

2019-11-11

Bug Fixes

• Fix a regression where it was no longer to pass a certain option format to generate (#​3223)

Pull Requests

• #​3223: Allow passing input options to output (@​lukastaegert)

v1.26.4

Compare Source

2019-11-09

Bug Fixes

• Keep watching known files after a plugin error during the initial build (#​3219)

Pull Requests

• #​3216: Fix small typo (@​kaisermann)
• #​3217: Update dependencies and fix security vulnerability (@​lukastaegert)
• #​3219: Also recover from plugin errors during the initial build (@​lukastaegert)

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