ci: repair the gersemi and clang-format checks

Homebrew no longer runs formula install steps from untrusted third party
taps, so the gersemi and clang-format checks fail while installing:

  Skipping obsproject/tools because it is not trusted.
  Error: unknown install step: run

Refresh the Homebrew metadata and trust the obsproject/tools tap
explicitly before installing, mirroring the fix applied upstream in
obs-studio.

Signed-off-by: EdueskaWeiz (GitHub user)
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>

Author: EdueskaWeiz

.github/actions/run-clang-format/action.yaml

@@ -36,6 +36,7 @@ runs:
         eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
         echo "/home/linuxbrew/.linuxbrew/bin:/home/linuxbrew/.linuxbrew/sbin" >> $GITHUB_PATH
         echo "/home/linuxbrew/.linuxbrew/opt/clang-format@19/bin" >> $GITHUB_PATH
+        brew update
         brew install --quiet zsh
         echo ::endgroup::
 
@@ -51,6 +52,8 @@ runs:
         if (( ${+RUNNER_DEBUG} )) setopt XTRACE
 
         print ::group::Install clang-format-19
+        brew update
+        brew trust obsproject/tools
         brew install --quiet obsproject/tools/clang-format@19
         print ::endgroup::
 

.github/actions/run-gersemi/action.yaml

@@ -35,6 +35,7 @@ runs:
         echo ::group::Install Dependencies
         eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
         echo "/home/linuxbrew/.linuxbrew/bin:/home/linuxbrew/.linuxbrew/sbin" >> $GITHUB_PATH
+        brew update
         brew install --quiet zsh
         echo ::endgroup::
 
@@ -50,6 +51,8 @@ runs:
         if (( ${+RUNNER_DEBUG} )) setopt XTRACE
 
         print ::group::Install gersemi
+        brew update
+        brew trust obsproject/tools
         brew install --quiet obsproject/tools/gersemi
         print ::endgroup::