Update external-dns Docker tag to v7.5.5

This MR contains the following updates:

Package	Update	Change
external-dns (source)	minor	7.3.2 -> 7.5.5

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Release Notes

bitnami/charts (external-dns)

v7.5.5

• [bitnami/external-dns] Release 7.5.5 (#​26948)

v7.5.3

• [bitnami/external-dns] Bump chart version (#​26629) (aba7563), closes #​26629

v7.5.2

• [bitnami/external-dns] Use different liveness/readiness probes (#​26317) (465cecf), closes #​26317

v7.5.1

• [bitnami/external-dns] PDB fixes (#​26292) (5e9d5eb), closes #​26292

v7.5.0

• [bitnami/external-dns] feat: ✨ 🔒 Add warning when original images are replaced (#​26201 (03f2cfd), closes #​26201

v7.4.0

• [bitnami/*] ci: 👷 Add tag and changelog support (#​25359) (91c707c), closes #​25359
• [bitnami/external-dns] PDB review (#​25933) (02b4f18), closes #​25933

v7.3.4

• [bitnami/external-dns] Release 7.3.4 updating components versions (#​26012) (47951be), closes #​26012

v7.3.3

• [bitnami/external-dns] Release 7.3.3 (#​25962) (e6e63e9), closes #​25962

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