chore(deps): update dependency @adobe/gatsby-theme-aio to v4.15.6

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@adobe/gatsby-theme-aio	4.14.17 → 4.15.6

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Release Notes

adobe/aio-theme (@​adobe/gatsby-theme-aio)

v4.15.6: chore(release): publish@4.15.6

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Update API title from 'MCP Servers' to 'Adobe AI Registry' in footer d02efe3

v4.15.5: chore(release): publish@4.15.5

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Fix

• Mobile side nav links 23b6828

v4.15.4: chore(release): publish@4.15.4

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Add MCP Server link to footer a8e61d7

v4.15.3: chore(release): publish@4.15.3

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Feat

• Add hideLoading config to RedoclyAPIBlock bbb402c

v4.15.2: chore(release): publish@4.15.2

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Fix

• Prevent RedoclyAPIBlock from overflowing 9554f4b

v4.15.1: chore(release): publish@4.15.1

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Fix

• Update Footer link for Adobe Developers Blog 7c93835

v4.15.0

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Feature

• Switch over to use AEP Adobe Analytics 3f9d89e

v4.14.19

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Fix

• credential design issues - remove padding 693439c
• add in try catch when trying to parse search message f894ae2

v4.14.18: chore(release): publish@4.14.18

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Feature

• Add ctrlFHijack config to RedoclyAPIBlock 541e825

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