Add functions changelog

[emilypgoogle]

Changelog entry should be picked up for the next release

[github-actions]

Release note changes

The following release notes were modified. Please ensure they look correct.

Release Notes

firebase-functions

### {{functions_client}} version 21.1.1 {: #functions-client_v21-1-1}

* {{fixed}} Resolve Kotlin migration visibility issues
  (GitHub [#6522](//github.com/firebase/firebase-android-sdk/issues/6522){: .external})

#### {{functions_client}} Kotlin extensions version 21.1.1 {: #functions-client-ktx_v21-1-1}

The Kotlin extensions library transitively includes the updated
`firebase-functions` library. The Kotlin extensions library has no additional
updates.

[google-oss-bot]

Coverage Report ¹

Affected Products

No changes between base commit (f80ba89) and merge commit (cd17001).

Test Logs

• Base (f80ba89): https://github.com/firebase/firebase-android-sdk/actions/runs/13251102506
• Merge (cd17001): https://github.com/firebase/firebase-android-sdk/actions/runs/13269368468

1. https://storage.googleapis.com/firebase-sdk-metric-reports/Ia8Tqgtaif.html

[google-oss-bot]

Size Report ¹

Affected Products

No changes between base commit (f80ba89) and merge commit (cd17001).

Test Logs

• Base (f80ba89): https://github.com/firebase/firebase-android-sdk/actions/runs/13251102506
• Merge (cd17001): https://github.com/firebase/firebase-android-sdk/actions/runs/13269368468

1. https://storage.googleapis.com/firebase-sdk-metric-reports/ihDtzWpCvr.html

[github-actions]

Test Results

14 files  +6  14 suites  +6   12s ⏱️ -7s
23 tests +1  23 ✅ +1  0 💤 ±0  0 ❌ ±0 
46 runs  +2  46 ✅ +2  0 💤 ±0  0 ❌ ±0 

Results for commit 77f9ae6. ± Comparison against base commit f80ba89.

This pull request removes 22 and adds 23 tests. Note that renamed tests count towards both.

com.google.firebase.crashlytics.internal.common.CrashlyticsControllerRobolectricTest ‑ testDoCloseSession_disabledAnrs_doesNotPersistsAppExitInfo
com.google.firebase.crashlytics.internal.common.CrashlyticsControllerRobolectricTest ‑ testDoCloseSession_enabledAnrs_doesNotPersistsAppExitInfoIfItDoesntExist
com.google.firebase.crashlytics.internal.common.CrashlyticsControllerRobolectricTest ‑ testDoCloseSession_enabledAnrs_persistsAppExitInfoIfItExists
com.google.firebase.crashlytics.internal.common.DataCollectionArbiterRobolectricTest ‑ testDefaultDataCollection_usedWhenNoOverrideOrManifestSetting
com.google.firebase.crashlytics.internal.common.DataCollectionArbiterRobolectricTest ‑ testManifestMetadata_respectedWhenNoOverride
com.google.firebase.crashlytics.internal.common.DataCollectionArbiterRobolectricTest ‑ testSetCrashlyticsDataCollectionEnabled_overridesOtherSettings
com.google.firebase.crashlytics.internal.common.SessionReportingCoordinatorRobolectricTest ‑ testAppExitInfoEvent_notPersistIfAnrBeforeSession
com.google.firebase.crashlytics.internal.common.SessionReportingCoordinatorRobolectricTest ‑ testAppExitInfoEvent_notPersistIfAppExitInfoNotAnrButWithinSession
com.google.firebase.crashlytics.internal.common.SessionReportingCoordinatorRobolectricTest ‑ testAppExitInfoEvent_persistIfAnrWithinSession
com.google.firebase.crashlytics.internal.common.SessionReportingCoordinatorRobolectricTest ‑ testAppExitInfoEvent_persistIfAnrWithinSession_multipleAppExitInfo
…

com.google.firebase.functions.AppCheckLimitedUseTest ‑ FirebaseFunctions#getHttpsCallable should build callable with FAC settings (when false)
com.google.firebase.functions.AppCheckLimitedUseTest ‑ FirebaseFunctions#getHttpsCallable should build callable with FAC settings (when true)
com.google.firebase.functions.AppCheckLimitedUseTest ‑ FirebaseFunctions#getHttpsCallable should not use limited-use tokens by default
com.google.firebase.functions.AppCheckLimitedUseTest ‑ FirebaseFunctions#getHttpsCallableFromUrl callable with FAC settings (when false)
com.google.firebase.functions.AppCheckLimitedUseTest ‑ FirebaseFunctions#getHttpsCallableFromUrl callable with FAC settings (when true)
com.google.firebase.functions.AppCheckLimitedUseTest ‑ FirebaseFunctions#getHttpsCallableFromUrl should not use limited-use tokens by default
com.google.firebase.functions.FunctionsRegistrarTest ‑ getComponents_publishesLibVersionComponent
com.google.firebase.functions.FunctionsTests ‑ Firebase#functions should delegate to FirebaseFunctions#getInstance(FirebaseApp, region)
com.google.firebase.functions.FunctionsTests ‑ Firebase#functions should delegate to FirebaseFunctions#getInstance(region)
com.google.firebase.functions.FunctionsTests ‑ FirebaseApp#functions should delegate to FirebaseFunctions#getInstance(FirebaseApp)
…

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